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# Metro Optics

Always Ahead of the Curve

## Sitemaps

- [XML Sitemap](https://www.metro-optics.com/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [Blog](https://www.metro-optics.com/blog/) - Blog
- [MetroSoft Max](https://www.metro-optics.com/metrosoft-max/) - Maximum Astigmatism MetroSoft Max stands for “maximum astigmatism," ideal for your patients whose visual needs can't be met with glasses or standard daily contact lenses. Lens Parameters The MetroSoft Max can correct up to 8.00D of astigmatism, and we deliver the lenses to you in about a week. Base curve: 8.1 to 8.9 depending on
- [MetroSoft Max Mild Astigmat](https://www.metro-optics.com/metrosoft-max-fitting-mild-astigmat/) - Optometrist: Delina Patel, O.D. Practice: Pearle Vision Bunker Hill Patient: 42 YO Female Condition: Mild Astigmatism Presentation: Patient was unhappy with her current soft lenses and did not want to wear RGPs. Ocular History: Patient was previously fit elsewhere, unhappy with her soft lenses. Her chief complaints were poor vision, glare, discomfort, and dryness.
- [Metro Optics Multifocal Quick Reference](https://www.metro-optics.com/metro-optics-multifocal-quick-reference/) - Health, Happiness & Multifocal Lenses Metro Optics custom multifocal lenses fill a niche commodity lenses can’t touch. By using Metro Optics proven presbyopic lens designs, you will realize how simple and rewarding it is to fit custom multifocal contact lenses. Metro Optics Multifocal Quick Reference: Our design portfolio includes soft, corneal GP and scleral lens
- [Successful Treatment of Keratoconus with ComfortKone](https://www.metro-optics.com/successful-treatment-of-keratoconus-with-comfortkone/) - Optometrist: Erin Koetter Practice: Eye Hub, Houston, TX Patient: 31 YO Female Engineer Condition: Undiagnosed Keratoconus Background: She had no clue that she had undiagnosed Keratoconus. She was functional at 20/400 OD and OS. She was told she had “lazy eyes.” Treatment: Once the patient was properly diagnosed with Keratoconus, Dr. Koetter successfully fit her
- [Successful Treatment of Keratoconus with ComfortKone](https://www.metro-optics.com/successful-treatment-of-keratoconus-with-comfortkone-2/) - Optometrist: Dr. Brian Cox Practice: Spring Eye Care, Spring, Texas Patient: 51 YO Male Elevator shaft technician Condition: Advanced Keratoconus Background: Rx: OD -35.25 OS -32.25 Steep Ks OD 66.5 D OS 66.5 D This was the last reading taken in 2021 Unable to get a current reading Corneal scarring Vision: patient is unable to
- [Focus: Graham Eye Associates](https://www.metro-optics.com/focus-graham-eye-associates/) - Today our focus is on Dr. Tammi Graham, OD of Graham Eye Associates in the Woodlands, Texas. We asked Dr. Graham ten questions to learn more about her, and her practice. Her answers offer clarity and insight into the life-changing world of custom contact lenses. 1. What inspired you to specialize in custom contact lenses,
- [Successful Treatment of Keratoconus with KeraSoft Thin](https://www.metro-optics.com/successful-treatment-of-keratoconus-with-kerasoft/) - Patient:24 YO Male College Football Player Condition: Bilateral Keratoconus Ocular History: Undetermined manifest refraction due to high corneal irregularity. Treatment: Due to high physical activity and poor GP lens tolerance, lens fit was converted to piggy-back system resulting in BCVA 20/50 OU. Refit in Kerasoft OU with first fit parameters: • OD BC 8.40, -4.75
- [6 Steps to Successfully Incorporate Specialty Contact Lenses Into Your Practice](https://www.metro-optics.com/6-steps-to-successfully-incorporate-specialty-contact-lenses-into-your-practice/) - Are you looking to offer specialty contact lenses for patients who can't achieve their best vision with glasses or daily contacts? Metro Optics’ innovative portfolio enables eye care professionals to source high-quality custom contact lenses, ranging from mild prescriptions to high-cylinder patients, and even the most hard-to-fit eye conditions. 6 Steps to Success Network: Spread
- [Properly Care for Scleral lenses with the Metro Optics Care Kit](https://www.metro-optics.com/properly-care-for-scleral-lenses-with-the-metro-optics-care-kit/) - Proper contact lens hygiene plays a significant role for successful scleral lens outcomes. One study found that 66% of complications in contact lens wearers were due to poor hygiene.1 We offer a scleral lens care kit to improve compliance and overall lens performance. The care kit includes a ten day supply of the highest quality
- [Successful Treatment of Keratoconus with InSight Scleral Lens](https://www.metro-optics.com/successful-treatment-of-keratoconus-with-insight-scleral-lens/) - Doctor: Dr. Arun Kaistha Practice: Cooper River Eye Eye Associates, New Jersey Patient: 15-year-old male Condition: Undiagnosed Keratoconus Background: A 15-year-old male patient had been struggling with deteriorating vision for several years, visiting multiple doctors. Despite numerous consultations, the root cause of his vision issues remained unidentified, leaving the patient barely able to count fingers.
- [Successful Treatment of Keratoconus with ComfortKone Lens](https://www.metro-optics.com/successful-treatment-of-keratoconus-with-comfortkone-lens-k-s/) - ECP: Esmeralda De La Torres Practice: Kelsey-Seybold Main Campus Patient: 25 YO Female Condition: Undiagnosed Keratoconus Ocular History:: A 25-year-old female patient presented with 20/400 OD and 20/200 OS. She was able to see although everything was blurry. Her vision was better as as a young child and progressively deteriorated as she grew up to
- [Successful Treatment of Keratoconus with ComfortKone Aspheric Lens](https://www.metro-optics.com/successful-treatment-of-keratoconus-with-comfortkone-aspheric-lens-hakimi/) - Optometrist: Dr. Stephen Hakimi Practice: Pasadena Eye Associates Patient: 50 YO female Condition: Unilateral Keratoconus Ocular History: The patient wore RGPs successfully for many years but began experiencing reduced vision and clarity in her left eye. She was highly sensitive to even minor prescription changes of 0.25 Diopters, which triggered associated symptoms such as headaches
- [Patient Outcome: Successful InSight Scleral Lens Fitting of Corneal Transplant](https://www.metro-optics.com/patient-outcome-successful-insight-scleral-lens-fitting-of-corneal-transplant-dr-lechlitner/) - Optometrist: Stephanie Lechlitner, O.D. Practice: Oak Hill Eye Care, Austin, Texas Patient: 72 YO Female Condition: Repeat Corneal transplant and repaired retinal detachment OD Presentation: Patient presented with high myopia OU. Irregular corneal surface OD due to corneal graft. Ocular History: The patient has been functioning with monocular vision for about 10 years. She experienced
- [InSight Scleral Lenses for Keratoconus](https://www.metro-optics.com/insight-scleral-lenses-for-keratoconus/) - Practice: Illinois College of Optometry Patient: 36 YO Male Condition: Keratoconus Presentation: Patient was diagnosed with keratoconus when he was 26 years old. He was referred by his OMD for a contact lens fitting. He had never worn glasses or contacts. He reported difficulty driving at night and was concerned about getting his driver's license
- [InSight Scleral Lens Checklist](https://www.metro-optics.com/insight-scleral-lens-checklist/) - What Information Do You need to order an InSight Scleral Lens? Our methodology focuses on simplicity and optimizing your chair time. Provide us with your observations, and we'll handle the lens parameters. If you can place a diagnostic lens on the eye with sodium fluorescein (NaFl), note your observations, we can deliver an initial lens
- [Patient Outcome: Successful Treatment of Severe Dry Eye Disease with Standard Spherical RGP](https://www.metro-optics.com/patient-outcome-successful-treatment-of-severe-dry-eye-disease-with-standard-spherical-rgp/) - Optometrist: Dr. Katherine Tran, O.D. Practice: Eye Society, Houston, TX Patient: 30 YO Female Condition: Severe Dry Eye Disease Presentation: Patient presented with extreme dry eye and was previously advised against wearing contacts. She expressed a preference for contacts over glasses. Ocular History: The patient is a high myope with bilateral astigmatism. She can only
- [How to Empirically Fit Corneal GPs](https://www.metro-optics.com/how-to-empirically-fit-corneal-gps/) - Simple & Straightforward Fitting corneal GPs is easier than you think. Getting started is easy - no diagnostic fit set is required for most Metro Optics GP lens designs. Note: Keratoconus can be fit empirically, but chair time is reduced by using a diagnostic set. We offer a complimentary ComfortKone Quick Fit Set. Learn more here.
- [Patient Outcome: Successful RSb Corneal GP Fitting for Post-Surgical Cornea](https://www.metro-optics.com/patient-outcome-successful-rsb-corneal-gp-fitting-for-post-surgical-cornea/) - Optometrist: Shelby Gross, OD Practice: Heights Vision Specialists Patient: 78 YO Male Condition: Post LASIK & Cataract Presentation: OD: -4.00 -2.50 x 090 OS: - 0.75 -0.75 x 045 Patient doesn’t want to wear glasses, “Anything but Glasses.” Conventional lenses aren’t working for him. He has difficulty seeing his lenses and ends up poking his
- [Patient Outcome: Post-PKP Corneal GP Lens Fit](https://www.metro-optics.com/patient-outcome-post-pkp-corneal-gp-lens-fit/) - Practice: Illinois College of Optometry Patient: 86 YO Female Condition: Keratoconus, s/p PKP OS Presentation: Patient has a history of long term corneal GP wear for keratoconus. She presented for new corneal GPs after undergoing cataract surgery and a corneal transplant OS. Ocular History: Keratoconus, cataract surgery OD, cataract surgery OS, dry eye disease, allergic
- [KeraSoft Lenses for Keratoconus, Intacs & Crosslinking](https://www.metro-optics.com/kerasoft-lenses-for-keratoconus-intacs-and-crosslinking/) - Practice: Illinois College of Optometry Patient: 52 YO Female Condition: Keratoconus, s/p intacs OD Presentation: Patient was diagnosed with keratoconus over 20 years prior. She had intacs and corneal cross linking OD. Her goal was to stay in soft contact lenses if possible. Ocular History: Keratoconus, intacs, corneal cross linking, ocular allergies Prescribed Lenses: Kerasoft
- [Successful Myopia Management with Metro-K Lenses](https://www.metro-optics.com/successful-myopia-management-with-ortho-k-lenses/) - Optometrist: Beth Robinson, O.D. Practice: See B. Seen Eyecare + Optical Bar, Friendswood, Texas Patient: 12 YO Female Condition: Myopia OU Presentation: Patient presents with mild myopia OU wearing soft daily contact lenses. She reports slight changes in distance vision with daily soft contact lenses prescribed six months prior. Ocular History: Manifest refraction upon examination
- [Successful Adult Metro K Fitting-Outcome](https://www.metro-optics.com/successful-adult-ortho-k-fitting-outcome/) - Optometrist: Steven Chau, Jr., O.D. Practice: Vision Republic, Katy, Texas Patient: 31 YO Female Condition: Myopia OU with GPC Presentation: Patient works in a lab setting where she has wears a face mask and goggles, causing her glasses to fog up. She is also prohibited from wearing soft contact lenses in the lab. She
- [Which Contact Lens Solution Should I Use?](https://www.metro-optics.com/which-contact-lens-solution-should-i-use/) - Which Contact Lens Solutions Should I Use? Cleaning, disinfecting, saline, rewetting drops—oh my! Understand the differences between the various contact lens solutions and which is the best solution for your specific contacts. Always inform your doctor about the solution you're using. You can find many of the solutions at your local Walgreens, CVS, drugstore, grocery
- [What is the ComfortKone Lens?](https://www.metro-optics.com/what-is-the-comfortkone-lens/) - What is the ComfortKone Lens? ComfortKone is an FDA Cleared RGP contact lens design for Keratoconus applications. The ComfortKone Aspheric is the most advanced lens for patients in any stage of Keratoconus. This unique lens design provides consistent results with maximum comfort and visual acuity for keratoconus patients. What does FDA Clearance mean? The ComfortKone

## Pages

- [Home](https://www.metro-optics.com/) - Your professional contact lens designer. We provide eye care professionals with specialty soft, corneal and scleral contact lenses for hard to fit eyes.
- [Practitioner Resources](https://www.metro-optics.com/practitioner-resources/) - Practitioner ResourcesHelp Patients Find YouPut My Practice on the Map We are actively updating our website – for any contact lens orders, please email info@metro-optics.com 2026 Webinars Title: InSight® Scleral: Transforming Vision in Challenging Patients. Part 1: Fitting the LensDate: Wednesday, March 18th, 2027Time: 8:00 PM ET (5:00 PM PT, 7:00 PM CT)Speaker: Lindsay
- [Diagnostic Fit Sets](https://www.metro-optics.com/diagnostic-fit-sets/) - Diagnostic Fit Sets Diagnostic Fit Sets for Specialty Lens Success Our diagnostic fit sets are designed to streamline the fitting process while giving practitioners the tools and support needed to achieve successful patient outcomes. Request a Diagnostic Fit Set Select the diagnostic fit set you’re interested in, and we’ll contact you with pricing, availability, and
- [Lens Surface Treatments](https://www.metro-optics.com/lens-surface-treatments/) - Lens Surface Treatments For Contact LensesEMAIL USPlasma Surface Treatment: Improved Wettability And Initial Performance Gas Plasma Treatment of rigid corneal and scleral lenses greatly enhances their on-eye performance. It improves the adherence of lens wetting solutions and tear film to the lens surface thus eliminating dry spots that degrade comfort and visual acuity. Plasma treatment
- [Soft](https://www.metro-optics.com/soft/) - Custom Soft Contact LensesThe Soft Side of Metro Optics Custom soft contact lenses are an important part of a comprehensive specialty contact lens practice. Whether you’re managing higher amounts of astigmatism, or patients who fall outside the parameters of conventional soft lenses, they expand your ability to provide personalized solutions while helping more patients stay
- [Post Surgical](https://www.metro-optics.com/post-surgical/) - Post-Surgical Contact LensesCONTACT USComfort & Clarity When You Need It On occasion a patient’s eyesight is less-than-desirable after refractive surgery, and a follow-up surgical procedure or enhancement is not possible. There are also occasions where eyesight is less-than-desirable following a corneal graft. In these instances custom contact lenses can make all the difference in achieving
- [Keratoconus](https://www.metro-optics.com/keratoconus/) - Keratoconus Contact LensesREQUEST INFORMATIONThere Are Many Options For The Patient With Keratoconus Keratoconus usually requires the use of specialty contact lenses to achieve good vision and there are a number of options to choose from. The most common choice is corneal rigid gas permeable contact lenses that are highly effective in addressing this irregular corneal astigmatism and providing a
- [Education](https://www.metro-optics.com/education/) - EducationWe look forward to seeing you virtually or in-person at the events below!Get Event UpdatesIn-Person Events & Workshops Global Specialty Lens Symposium (GSLS) Las Vegas, NV Texas Optometric Summit (TOA) JW Marriott Austin, TX Association of Optometric Contact Lens Educators (AOCLE) University of Houston College of Optometry (UHCO) Austin Colorado Dallas Fort Worth Houston San
- [Spherical Astigmatic](https://www.metro-optics.com/spherical-astigmatic/) - Spherical/Astigmatic Contact LensesORDER EMPIRICALLYCustom Lenses Can Also Be Relatively Standard Standard spherical and astigmatic corrections are a big part of the custom contact lens world. Patients often find a custom contact lens can deliver a sharper vision correction and higher level of wearing comfort. A wide range of standard vision corrections can be found in
- [scleral](https://www.metro-optics.com/scleral/) - Scleral Contact LensesRequest More InformationUnique Tools To Address The Most Challenging Cases Scleral lenses are large diameter rigid lenses that rest on the sclera and vault over the cornea. Scleral lenses were first designed in 1887, predating what we consider to be “normal” contact lenses. Today scleral lenses provide the opportunity to effectively address the vision needs of some irregular
- [Metro-K](https://www.metro-optics.com/orthokeratology/) - Metro-K Ortho-K LensGet CertifiedReturning User?Log-InManage Myopia the Easy Way! The Metro-K is a custom designed overnight orthokeratology lens that utilizes an empiric fitting approach to treat high amounts of myopia and astigmatism, producing highly successful outcomes quickly and easily. No Fitting Set Required – Custom lenses designed from spectacle Rx and corneal topography measurements. Free
- [User Profile](https://www.metro-optics.com/user-profile/) - Login
- [Reset Password](https://www.metro-optics.com/reset-password/) - Reset Password Username or Email Address
- [Registration Success](https://www.metro-optics.com/registration-success/) - Welcome
- [Registration](https://www.metro-optics.com/registration/) - Registration "*" indicates required fields Name* First Last Email Address* Enter Email Confirm Email Password* Enter Password Confirm Password Phone Number* Practice Name* NPI Number* Best Way to Reach Out:* Email Address Phone Number Register Once you click “Register” you’ll receive a confirmation email within 5-10 minutes. If you don’t see it, please check your
- [Profile](https://www.metro-optics.com/profile/)
- [Orthokeratology Basic Training and Certification](https://www.metro-optics.com/orthokeratology-basic-training-and-certification/) - Orthokeratology Basic Training and Certification Free Contamac Metro Optics Orthokeratology Basic Training and Certification Enroll Now Free Metro Optics Orthokeratology Basic Training and Certification Enroll Now
- [New Account Request Edits](https://www.metro-optics.com/test-new-account-request/) - Test PageNew Account Request Form "*" indicates required fields Account Name:* Doctor's Name:* Primary Contact:* Position:* Bill To Address:* Street Address City State / Province / Region ZIP / Postal Code AfghanistanAlbaniaAlgeriaAmerican SamoaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBoliviaBonaire, Sint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBrunei DarussalamBulgariaBurkina FasoBurundiCabo VerdeCambodiaCameroonCanadaCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos IslandsColombiaComorosCongoCongo, Democratic Republic
- [My Certificates](https://www.metro-optics.com/my-certificates/) - My Certificates Metro-K for Ortho-K Certification See More Boston Metro-K Certification See More
- [Courses](https://www.metro-optics.com/courses/) - Free Contamac Metro Optics Orthokeratology Basic Training and Certification Enroll Now Free Metro Optics Orthokeratology Basic Training and Certification Enroll Now
- [New Account Request](https://www.metro-optics.com/new-account-request/) - New Account Request Form "*" indicates required fields Account Name:* Doctor's Name:* Primary Contact:* Position:* Bill To Address:* Street Address City State / Province / Region ZIP / Postal Code AfghanistanAlbaniaAlgeriaAmerican SamoaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBoliviaBonaire, Sint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBrunei DarussalamBulgariaBurkina FasoBurundiCabo VerdeCambodiaCameroonCanadaCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos IslandsColombiaComorosCongoCongo, Democratic Republic of
- [Orthokeratology Basic Training and Certification - Questionnaire](https://www.metro-optics.com/orthokeratology-basic-training-and-certification-questionnaire/) - Questionnaire Please complete this questionnaire to be redirected to the Orthokeratology course.
- [Testimonials](https://www.metro-optics.com/pages/testimonials/) - TESTIMONIALSWe love hearing how our lenses make a difference — your story inspires our team.Share Your ExperienceTESTIMONIALS “Metro has been my go to company for personalized service! They help me design and make RGPs, sclerals and even soft lenses for the hard-to-fit patient. Yesterday they rushed a job for a KC patient, and I just
- [Footer](https://www.metro-optics.com/footer/) - Get in Touch ADDRESS15802 Vision DrivePflugerville, Texas 78660CALL US800-223-1858 Let’s Connect All rights reserved. | Quality Terms & Conditions
- [Patient Outcomes](https://www.metro-optics.com/patient-outcomes/) - About Us At Metro OpticsPatient Outcomes with Custom Contact LensesShare Your ExperienceReal Results, Better Vision Custom contact lenses are transforming lives by offering clear, comfortable vision for patients with unique needs, such as keratoconus, irregular corneas, and presbyopia. These personalized lenses provide more than just visual clarity—they enhance quality of life, allowing patients to return
- [Contact us](https://www.metro-optics.com/contact-us/) - Our Location & Contact InformationSpeak To One Of Our Contact Lens Experts Now at 800-223-1858 info@metro-optics.com We look forward to hearing from you! Office HoursMonday: 8:00 AM – 5:00 PMTuesday: 8:00 AM – 5:00 PMWednesday: 8:00 AM – 5:00 PMThursday: 8:00 AM – 5:00 PMFriday: 8:00 AM – 4:30 PMSaturday: ClosedSunday: ClosedContact Information15802 Vision Drive
- [Find a Specialty Contact Lens Doctor](https://www.metro-optics.com/find-a-doctor/) - Search Your AreaFind a Specialty Contact Lens Doctor Fetching directions…… Reset directions Print directions ZIP / Address: Radius: 1mi5mi10mi25mi50mi75mi100mi150mi200mi300mi No results found in this location. Please try again. Title Category Address Description Link Want to add your practice to the map? Email your practice details to info@metro-optics.com Learn About Our Lens Offerings
- [All Lens Types](https://www.metro-optics.com/all-lens-types/) - Contact LensesAll Lens TypesSpherical/Astigmatic Contact Lenses Standard spherical correction for nearsightedness or farsightedness is common. While most people may use commodity disposable type lenses, custom contact lenses can often offer a higher quality vision correction. Astigmatism is another common condition that is regularly addressed by contact lenses. Much like the standard spherical prescription where commodity
- [Patient Resources](https://www.metro-optics.com/patient-resources/) - Patient ResourcesValuable Information For Your Eyes Specialty contact lenses can feel and look a bit different than typical styles. Staying informed can maximize chances of a positive experience with your contact lenses. There are many online resources available to supplement you in maintaining your ocular health and vision. We recommend talking to your eye doctor
- [About us](https://www.metro-optics.com/about-us/) - About Us At Metro OpticsDecades Of Creating And Manufacturing Top-Quality LensesMetro Optics has been a leading manufacturer for custom contact lenses in the United States since 1973. We take pride in having assisted thousands of eye care professionals throughout the country improve their practices by helping them broaden their offerings to serve a wider variety
- [Metro Optics Turns 50 in 2023!](https://www.metro-optics.com/metro-optics-turns-50-in-2023/) - Let’s CelebrateWe have made so many memories along the way. If you feel inspired, we’d love for you to share yours with us.SHARE A MEMORY “Our mission has always been…to serve Eye Care Professionals with the highest quality products and personalized customer service to help their patients see their best.” – Jim Webb, Founder Metro
- [Privacy Policy](https://www.metro-optics.com/privacy-policy/) - Who we are Our website address is: https://www.metro-optics.com. Comments When visitors leave comments on the site we collect the data shown in the comments form, and also the visitor’s IP address and browser user agent string to help spam detection. An anonymized string created from your email address (also called a hash) may be provided
- [presbyopia](https://www.metro-optics.com/presbyopia/) - Presbyopia Contact LensesCONTACT USContact Lenses For When The Need For Bifocals Has Arisen Presbyopia is an age-related condition that makes it difficult to see objects up close. With age, the lens of the eye becomes less flexible, making it more difficult for the eye to adjust and focus on near objects. Multifocal and bifocal contact lenses are an
- [Irregular Cornea](https://www.metro-optics.com/irregular-cornea/) - Irregular Cornea Contact LensesCONTACT USComfortKone Specifically designed to address keratoconus in any stage, ComfortKone Keratoconus Aspheric is a rigid corneal lens that is designed to maximize visual acuity while providing a lens that is also comfortable to wear. It incorporates a sophisticated, yet simple to use fitting system to minimize chair time while fitting the
- [Care Kits Solutions](https://www.metro-optics.com/care-kits-solutions/) - Care Kits & SolutionsCONTACT USScleral Lens Care Kit Metro Optics offers our own custom Scleral Lens starter kit. It contains all the tools and instructions needed to begin successful wear of scleral lenses. Kit Includes: Tangible clean Multi‐Purpose solution in full size 3.4 Fl oz bottle Nutrifill samples for up to 20 single lens insertions
- [Leave a Testimonial](https://www.metro-optics.com/pages/testimonials/leave-testimonial/) - LEAVE A TESTIMONIAL Leave a Testimonial This field is hidden when viewing the formNext Steps: Install the Survey Add-OnThis form requires the Gravity Forms Survey Add-On. Important: Delete this tip before you publish the form.Name(Required) First Last Company NameEmail(Required) Website Please leave a testimonial below:(Required) Submit
- [Pages](https://www.metro-optics.com/pages/) - PediatricianWE ARE DENTISTSDOCTOR YOU CHOOSEDonec hendrerit rutrum nibh, id egestas magna sodales a. Fusce feugiat velit eu ante blandit facilisis.YOUR HEALTHCAREVestibulum imperdiet vestibulum laoreet. Integer elementum euismod ante sit amet elementum.ALWAYS THERE FOR YOU Mauris commodo lacinia nisi a fermentum. Donec risus magna, fringilla laoreet ullamcorper in, lobortis semper enim.NURSING STAFFDonec libero dui, dapibus non
- [Single post](https://www.metro-optics.com/blog/single-post/)

## Courses

- [Contamac Metro Optics Orthokeratology Basic Training and Certification](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/) - Welcome to the Metro-Optics Optimum Infinite for Ortho-K Training and Certification! After the presentation, you’ll answer 15 questions to complete the certification process. You’re welcome to retake the exam as many times as needed to achieve a passing score. Access your certificate anytime in your dashboard. Once certified, you’ll be able to order Metro-K
- [Metro Optics Orthokeratology Basic Training and Certification](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/)

## Modules

- [Inferior Keratometry Reading](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/inferior-keratometry-reading/) - Inferior Keratometry Reading If corneal cylinder is >1.00 Diopter, acquire the inferior keratometry reading 3.7mm from center Must not be more than 1.00 Diopter steeper than the temporal keratometry reading at 3.7mm so against-the-rule astigmatism is not induced If the corneal cylinder is greater than 1.00 Diopter, acquire the inferior keratometry reading also at 3.70mm
- [Inferior Keratometry Reading](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/inferior-keratometry-reading-2/) - Inferior Keratometry Reading If corneal cylinder is >1.00 Diopter, acquire the inferior keratometry reading 3.7mm from center Must not be more than 1.00 Diopter steeper than the temporal keratometry reading at 3.7mm so against-the-rule astigmatism is not induced If the corneal cylinder is greater than 1.00 Diopter, acquire the inferior keratometry reading also at 3.70mm
- [Initial Examination](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/initial-examination-2/) - Initial Examination Measure Intraocular Pressure (IOP) Dry Eye Test Measure Horizontal Visible Iris Diameter (HVID) Measure pupil size in dim light Pupil position by topography The initial exam must include a standard eye exam to measure the refraction and a corneal evaluation to obtain K readings. The Horizontal Visible Iris Diameter (HVID) should be measured
- [Fitting Philosophy](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/fitting-philosophy-2/) - Fitting Philosophy The Metro-K design is fit from keratometry readings from topography and manifest refraction. Fluorescein is used only for checking the apparent on-eye width of the Reverse Zone. In-office problem solving is not recommended. Consultation is suggested for any fit that is sub-optimal. Metro-K must be well centered Fluorescein pattern evaluation is useful for:
- [Parameters](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/parameters/) - Parameters
- [Patient Selection for Ortho-K](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/patient-selection-for-ortho-k-2/) - Patient SelectionGood Candidates Moderate to low level myopes (-1.00D to -6.00D) < 1.75 D astigmatism Soft lens / spectacle wearers Poor Candidates Against the rule astigmatism > 1.75D Low corneal eccentricity Current GP lens wearers Let’s discuss which patients are well suited for overnight orthokeratology. The range of myopic correction reduction approved with Optimum Infinite
- [Horizontal Visible Iris Diameter](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/horizontal-visible-iris-diameter-2/) - Horizontal Visible Iris Diameter Helpful in the determination of corneal eccentricity and lens diameter The measurement of the corneal diameter is helpful in the determination of corneal eccentricity and lens diameter. This measurement should be acquired manually with a HVID ruler or by topography for each patient.
- [Landing Zone](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/alignment-zone-2/) - Landing Zone Referred to as the “Landing Zone Angle” or “LZA” and is non-curved Closely aligns peripheral cornea providing a bearing zone Facilitates shaping lens centration The third zone is the landing zone. This area is non-curved and closely aligns with the peripheral cornea providing a bearing zone to help the lens to center. It’s
- [Temporal Keratometry Reading](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/temporal-keratometry-reading-2/) - Temporal Keratometry Reading Acquire temporal keratometry reading at 3.7mm from center Next, using the topographer, acquire the temporal K at 3.7mm from the center. When designing an Orthokeratology lens, an important consideration is the comparison of central corneal curvature to temporal curvature. An accurate temporal reading at 3.7mm is essential for proper lens design because
- [Central Keratometry Reading](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/central-keratometry-reading-2/) - Central Keratometry Reading Central Curvature of apical radius should be like the Keratometry reading. The normal cornea will flatten between 0.75 Diopter and 1.25 Diopters temporally When reviewing the patient’s topographical data, an important consideration is to see if the central curvature of apical radius is like the keratometry reading. If it isn’t, there may
- [Patient Selection: Considerations](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/patient-selection-considerations-2/) - Patient Selection: Considerations Large pupils limit success Greater than 5mm in normal illumination Greater than 7mm in low illumination Treatment zone needs to be large enough to cover the pupil under these light conditions in order to avoid glare, reflections, and double images. Evaluate the pupil size accurately in both dim and normal illumination. Depending
- [Contamac Optimum Infinite GP Lens Material](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/contamac-optimum-infinite-gp-lens-material-2/) - Contamac Optimum Infinite Lens Material Contamac Optimum Infinite gas permeable lens material has been available for a number of years in North America. It provides a significant amount of oxygen exchange having a Dk of 180 measured by the ISO/Fatt polarographic method. Contamac Optimum Infinite for overnight orthokeratology are available in distinctive colors to allow
- [Mechanism for Corneal Shape Change <br>How does Ortho-K Work?](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/mechanism-for-corneal-shape-change-how-does-ortho-k-work-2/) - Mechanism for Corneal Shape ChangeHow does Ortho-K Work?Reverse Geometry Ortho-K Shaping Lens Design Compression of cells with redistribution of fluids Compression forces in the central epithelium to induce movement of fluid from center to periphery Results in smaller cells in the center and enlarged cells in the mid periphery Thinner central corneal epithelium Positive
- [Reverse Zone](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/reverse-zone-2/) - Reverse Zone 3–5D (or more) steeper than BOZR Creates an annulus tear reservoir inducing negative pressure Allows “migration” of epithelial cells and intracellular fluid during overnight contact lens wear The second curve is most often termed the reverse zone and can have a radius of 5.0 to 9.0 millimeters, or is three to five diopters
- [Peripheral Edge Curve](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/peripheral-edge-curve-2/) - Peripheral Edge Curve Flatter than alignment curve providing edge lift Movement, tear and debris exchange Slightly tighter than that of conventional GP lens designs The fourth curve, or peripheral edge curve, is flatter than the alignment curve, but slightly steeper than that of conventional lens designs providing an edge lift adequate for lens movement along
- [Eye Care Practitioner Important Safety Information](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/eye-care-practitioner-important-safety-information-2/) - Eye Care Practitioner Important Safety InformationIndications for use The Optimum Infinite Orthokeratology Lenses II (tisilfocon A) for overnight wear are indicated for use in the reduction of refractive error in non-diseased eyes. The lenses are indicated for overnight wear for the temporary reduction of myopia up to 6.00 diopters with eyes having astigmatism up
- [Recommended Information to Send to the Lab](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/recommended-information-to-send-to-the-lab-2/) - Recommended Information to Send to the Lab Refraction Axial or sagittal topographic map Autokeratometry Readings Corneal Diameter (HVID) Pupil Size (dim light) We recommend sending the following information to the lab to ensure the design of the Metro-K lens: temporal Ks at 3.7mm from the center as determined from the topography. Inferior K at 3.7mm
- [Ocular Measurements](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/ocular-measurements-2/) - Ocular Measurements Central Keratometry reading Temporal Keratometry reading Inferior Keratometry reading *Axial or sagittal topographic data preferred When fitting the Metro-K lens, the use of topographical maps are vital for designing the initial lens as well as evaluating the results of the follow up visits. The pre-fit topography also assists in ruling out poor candidates
- [Lens Removal](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/lens-removal-2/) - Lens Removal Lens removal is important when managing orthokeratology lenses. It is important for the wearer to check that the lenses are moving before attempting removal. Instill several drops of rewetting solution just before sleep and upon waking. Instruct patients to contact office for guidance on management of bound lenses. In some cases, a DMV
- [Possible Adverse Effects](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/possible-adverse-effects-2/) - Possible Adverse Effects Patient symptoms: Eyes stinging, burning, itching (irritation), or other eye pains Comfort is less than when lens was first placed on eye Feeling of something in the eye, such as a foreign body or scratched area Excessive watering (tearing) of the eyes Unusual eye secretions Redness of the eyes Reduced sharpness of
- [Lens Design](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/lens-design-2/) - Lens Design Reverse Four Zone Lens Technology Shaping Zone (Base Curve) Recovery Zone (Reverse Curve) Alignment Zone Peripheral Zone The Shaping Zone, or Base Curve, positions over the pupil and is responsible for the flattening of the cornea to achieve desired myopic correction. Adjacent to the Shaping Zone, the steeper Recovery Zone, or reverse curve,
- [Patient Selection: Contraindications](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/patient-selection-contraindications-2/) - Patient SelectionContraindications DO NOT USE the Optimum Infinite Orthokeratology (tisilfocon A) shaping lenses when any of the following conditions exist: Acute and sub-acute inflammations or infection of the anterior chamber of the eye Any eye disease, injury, or abnormality that affects the cornea, conjunctiva, or eyelids Severe insufficiency of tears (dry eyes) Corneal hypoesthesia (reduced
- [Back Optic Zone Radius](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/back-optic-zone-radius-2/) - Back Optic Zone Radius Flatter than central corneal radius creating positive pressure Creates compression of central corneal epithelium Purpose: create “treatment zone” of 5mm or more The back optic zone radius, also termed the BOZR or base curve, is the first curve of Vision Shaping Treatment designs. Calculated to be flatter than the central corneal
- [Optimum Infinite Ortho-K Process](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/optimum-infinite-ortho-k-process-2/) - Optimum Infinite Ortho-K ProcessHow are Ortho-K designs approved? Design parameters must fall within the overnight orthokeratology approval All designs must be reviewed and approved by Contamac The laboratory must agree to manufacture the design in Optimum Infinite gas permeable lens material
- [What is Optimum Infinite Ortho-K?](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/what-is-optimum-infinite-ortho-k/) - What is Optimum Infinite Ortho-K? Approved design parameters in conjunction with an approved overnight material. There are the following choices in approved Optimum Infinite Ortho-K lens designs and fitting methods Topography-based fitting Empirical fitting (Ks and Rx) Use of a corneal topographer to assess and monitor ortho-k patients is essential for successful fitting and follow
- [Optimum Infinite Ortho-K](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/optimum-infinite-ortho-k/) - Optimum Infinite Ortho-KFDA Approvals On February 10th, 2026, Contamac received approval for Optimum Infinite Orthokeratology Lenses for overnight orthokeratology using Optimum Infinite Orthokeratology Lenses II (tisilfocon A). Contamac acquired a premarket approval for the Optimum Infinite Ortho-K Orthokeratology lens. This is marketed in the United States for overnight orthokeratology using Optimum Infinite gas permeable lens
- [Intro](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/modules/intro-2/) - Optimum Infinite for Overnight Orthokeratology Welcome to the Metro-K training module. This presentation will introduce you to Contamac Optimum Infinite Orthokeratology Lenses II (tisilfocon A) for the temporary reduction of myopia, and will provide you with information on the Metro-K system by Metro Optics. Please keep in mind that this training module is not meant
- [Optimum Infinite Ortho-K Parameters](https://www.metro-optics.com/modules/optimum-infinite-ortho-k-parameters/)
- [Recommended Information to Send to the Lab](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/recommended-information-to-send-to-the-lab/) - Recommended Information to Send to the Lab Refraction Axial or sagittal topographic map Autokeratometry Readings Corneal Diameter (HVID) Pupil Size (dim light) We recommend sending the following information to the lab to ensure the design of the Metro-K lens: temporal Ks at 3.7mm from the center as determined from the topography. Inferior K at 3.7mm
- [Fitting Philosophy](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/fitting-philosophy/) - Fitting Philosophy The Metro-K design is fit from keratometry readings from topography and manifest refraction. Fluorescein is used only for checking the apparent on-eye width of the Reverse Zone. In-office problem solving is not recommended. Consultation is suggested for any fit that is sub-optimal. Metro-K must be well centered Fluorescein pattern evaluation is useful for:
- [Lens Removal](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/lens-removal/) - Lens Removal Lens removal is important when managing orthokeratology lenses. It is important for the wearer to check that the lenses are moving before attempting removal. Instill several drops of rewetting solution like Boston® rewetting drops just before sleep and upon waking. Instruct patients to contact office for guidance on management of bound lenses. In
- [Patient Selection: Contraindications](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/patient-selection-contraindications/) - Patient Selection: ContraindicationsContraindications DO NOT USE the Boston Orthokeratology (oprifocon A) shaping lenses when any of the following conditions exist: Acute and sub-acute inflammations or infection of the anterior chamber of the eye Any eye disease, injury, or abnormality that affects the cornea, conjunctiva, or eyelids Severe insufficiency of tears (dry eyes) Corneal hypoesthesia (reduced
- [Ocular Measurements](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/ocular-measurements/) - Ocular Measurements Central Keratometry reading Temporal Keratometry reading Inferior Keratometry reading *Axial or sagittal topographic data preferred When fitting the Metro-K lens, the use of topographical maps are vital for designing the initial lens as well as evaluating the results of the follow up visits. The pre-fit topography also assists in ruling out poor candidates
- [Eye Care Practitioner Important Safety Information](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/eye-care-practitioner-important-safety-information/) - Eye Care Practitioner Important Safety InformationIndications for use Boston® Orthokeratology (oprifocon A) shaping lenses for overnight wear are indicated for use in the reduction of myopic refractive error in non-diseased eyes. The lenses are indicated for overnight wear as part of the Bausch + Lomb Vision Shaping Treatment VST® process for the temporary reduction of
- [Intro](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/intro/) - Vision Shaping Treatment VST® for Overnight Orthokeratology Welcome to the Metro-K training module. This presentation will introduce you to Bausch + Lomb Vision Shaping Treatment VST® for the temporary reduction of myopia, and will provide you with information on the Metro-K system by Metro Optics. Please keep in mind that this training module is not
- [Temporal Keratometry Reading](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/temporal-keratometry-reading/) - Temporal Keratometry Reading Acquire temporal keratometry reading at 3.7mm from center Next, using the topographer, acquire the temporal K at 3.7mm from the center. When designing an Orthokeratology lens, an important consideration is the comparison of central corneal curvature to temporal curvature. An accurate temporal reading at 3.7mm is essential for proper lens design because
- [Temporal Keratometry Reading](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/temporal-keratometry-reading-nq/) - Temporal Keratometry Reading Acquire temporal keratometry reading at 3.7mm from center Next, using the topographer, acquire the temporal K at 3.7mm from the center. When designing an Orthokeratology lens, an important consideration is the comparison of central corneal curvature to temporal curvature. An accurate temporal reading at 3.7mm is essential for proper lens design because
- [Base Curve](https://www.metro-optics.com/courses//modules/base-curve/)
- [Fitting Guide](https://www.metro-optics.com/courses//modules/fitting-guide/)
- [Evaluation Fluorescein Patterns](https://www.metro-optics.com/courses//modules/evaluation-fluorescein-patterns/)
- [Initial Lens Selection](https://www.metro-optics.com/courses//modules/initial-lens-selection/)
- ["A" Value](https://www.metro-optics.com/courses//modules/a-value/)
- [Module](https://www.metro-optics.com/modules/module-3/)
- [Contraindications](https://www.metro-optics.com/modules/contraindications/)
- [Ideal Candidate](https://www.metro-optics.com/modules/ideal-candidate/)
- [RGPs for Daily CL Patients](https://www.metro-optics.com/modules/rgps-for-daily-cl-patients/)
- [Module](https://www.metro-optics.com/modules/module-2/)
- [Exam Information](https://www.metro-optics.com/modules/exam-information/)
- [Regular Cornea](https://www.metro-optics.com/modules/regular-cornea/) - Spherical Astigmatic
- [Irregular Cornea](https://www.metro-optics.com/modules/irregular-cornea/)
- [Module](https://www.metro-optics.com/modules/module/)
- [Intro](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/intro-nq/) - Vision Shaping Treatment VST® for Overnight Orthokeratology Welcome to the OrthoATX training module. This presentation will introduce you to Bausch + Lomb Vision Shaping Treatment VST® for the temporary reduction of myopia, and will provide you with information on the OrthoATX system by Metro Optics. Please keep in mind that this training module is not
- [Eye Care Practitioner Important Safety Information](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/eye-care-practitioner-important-safety-information-nq/) - Eye Care Practitioner Important Safety InformationIndications for use Boston® Orthokeratology (oprifocon A) shaping lenses for overnight wear are indicated for use in the reduction of myopic refractive error in non-diseased eyes. The lenses are indicated for overnight wear as part of the Bausch + Lomb Vision Shaping Treatment VST® process for the temporary reduction of
- [Recommended Information to Send to the Lab](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/recommended-information-to-send-to-the-lab-nq/) - Recommended Information to Send to the Lab Refraction Axial or sagittal topographic map Corneal Diameter (HVID) Pupil Size (dim light) We recommend sending the following information to the lab to ensure the design of the OrthoATX lens: temporal Ks at 3.7mm from the center as determined from the topography. Inferior K at 3.7mm from center
- [Inferior Keratometry Reading](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/inferior-keratometry-reading-nq/) - Inferior Keratometry Reading If corneal cylinder is >1.00 Diopter, acquire the inferior keratometry reading 3.7mm from center Must not by more than 1.00 Diopter steeper than the temporal keratometry reading at 3.7mm so against-the-rule astigmatism is not induced If the corneal cylinder is greater than 1.00 Diopter, acquire the inferior keratometry reading also at 3.70mm
- [Central Keratometry Reading](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/central-keratometry-reading-nq/) - Central Keratometry Reading Central Curvature of apical radius should be like the Keratometry reading. The normal cornea will flatten between 0.75 Diopter and 1.25 Diopters temporally When reviewing the patient’s topographical data, an important consideration is to see if the central curvature of apical radius is like the keratometry reading. If it isn’t, there may
- [Horizontal Visible Iris Diameter](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/horizontal-visible-iris-diameter-nq/) - Horizontal Visible Iris Diameter Helpful in the determination of corneal eccentricity and lens diameter The measurement of the corneal diameter is helpful in the determination of corneal eccentricity and lens diameter. This measurement should be acquired manually with a HVID ruler or by topography for each patient.
- [Ocular Measurements](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/ocular-measurements-nq/) - Ocular Measurements Central Keratometry reading Temporal Keratometry reading Inferior Keratometry reading *Axial or sagittal topographic data preferred When fitting the OrthoATX lens, the use of topographical maps are vital for designing the initial lens as well as evaluating the results of the follow up visits. The pre-fit topography also assists in ruling out poor candidates
- [Initial Examination](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/initial-examination-nq/) - Initial ExaminationStandard Examination Measure Intraocular Pressure (IOP) Dry Eye Test Measure Horizontal Visible Iris Diameter (HVID) Measure pupil size in dim light Pupil position by topography The initial exam must include a standard eye exam to measure the refraction and a corneal evaluation to obtain K readings. The Horizontal Visible Iris Diameter (HVID) should be
- [Possible Adverse Effects](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/possible-adverse-effects-nq/) - Possible Adverse Effects Patient symptoms: Eyes stinging, burning, itching (irritation), or other eye pains Comfort is less than when lens was first placed on eye Feeling of something in the eye, such as a foreign body or scratched area Excessive watering (tearing) of the eyes Unusual eye secretions Redness of the eyes Reduced sharpness of
- [Lens Design](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/lens-design-nq/) - Lens Design Reverse Four Zone Lens Technology Shaping Zone (Base Curve) Recovery Zone (Reverse Curve) Alignment Zone Peripheral Zone The Shaping Zone, or Base Curve, positions over the pupil and is responsible for the flattening of the cornea to achieve desired myopic correction. Adjacent to the Shaping Zone, the steeper Recovery Zone, or reverse curve,
- [Fitting Philosophy](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/fitting-philosophy-nq/) - Fitting Philosophy The OrthoATX design is fit from keratometry readings from topography and manifest refraction. Fluorescein is used only for checking the apparent on-eye width of the Reverse Zone. In-office problem solving is not recommended; consultation is suggested for any fit that is sub-optimal. OrthoATX must be well centered Fluorescein pattern evaluation is useful for:
- [Patient Selection: Contraindications](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/patient-selection-contraindications-nq/) - Patient Selection: ContraindicationsContraindications DO NOT USE the Boston Orthokeratology (oprifocon A) shaping lenses when any of the following conditions exist: Acute and sub-acute inflammations or infection of the anterior chamber of the eye Any eye disease, injury, or abnormality that affects the cornea, conjunctiva, or eyelids Severe insufficiency of tears (dry eyes) Corneal hypoesthesia (reduced
- [Peripheral Edge Curve](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/peripheral-edge-curve-nq/) - Peripheral Edge Curve Flatter than alignment curve providing edge lift Movement, tear and debris exchange Slightly tighter than that of conventional GP lens designs The fourth curve, or peripheral edge curve, is flatter than the alignment curve, but slightly steeper than that of conventional lens designs providing an edge lift adequate for lens movement along
- [Patient Selection for Ortho-K](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/patient-selection-for-ortho-k-nq/) - Patient Selection for Ortho-KGood Candidates Moderate to low level myopes (-1.00D to -5.00D) < 1.50D astigmatism Corneal eccentricity (“e” values) of 0.5 and higher Soft lens / spectacle wearers Poor Candidates Against the rule astigmatism > 0.75D Low corneal eccentricity Current GP lens wearers Let’s discuss which patients are well suited for overnight orthokeratology. The
- [Patient Selection: Considerations](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/patient-selection-considerations-nq/) - Patient Selection: Considerations Large pupils limit success Greater than 5mm in normal illumination Greater than 7mm in low illumination Treatment zone needs to be large enough to cover the pupil under these light conditions in order to avoid glare, reflections, and double images. Evaluate the pupil size accurately in both dim and normal illumination. Depending
- [Reverse Zone](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/reverse-zone-nq/) - Reverse Zone 3–5D (or more) steeper than BOZR Creates an annulus tear reservoir inducing negative pressure Allows “migration” of epithelial cells and intracellular fluid during overnight contact lens wear The second curve is most often termed the reverse zone and can have a radius of 5.0 to 9.0 millimeters, or is three to five diopters
- [Alignment Zone](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/alignment-zone-nq/) - Alignment Zone Closely aligns peripheral cornea providing a bearing zone Facilitates shaping lens centration The third zone is the alignment zone. This area is flatter than the reverse curve area and closely aligns the peripheral cornea providing a bearing zone to help the lens to center. Its main function is the optimizing of lens centration.
- [Lens Removal](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/lens-removal-nq/) - Lens Removal guidance on management of bound lenses. In some cases, a DMV remover may be required. Lens removal is important when managing orthokeratology lenses. Lenses should exhibit movement prior to attempting removal. Rewetting drops or artificial tears should be administered before sleeping and upon waking. If patients struggle with a lens that is bound
- [Back Optic Zone Radius](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/back-optic-zone-radius-nq/) - Back Optic Zone Radius Flatter than central corneal radius creating positive pressure Creates compression of central corneal epithelium Purpose: create “treatment zone” of 5mm or more The back optic zone radius, also termed the BOZR or base curve, is the first curve of Vision Shaping Treatment designs. Calculated to be flatter than the central corneal
- [Mechanism for Corneal Shape Change <br>How does Ortho-K Work?](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/mechanism-for-corneal-shape-change-how-does-ortho-k-work-nq/) - Mechanism for Corneal Shape ChangeHow does Ortho-K Work?Reverse Geometry Ortho-K Shaping Lens Design Compression of cells with redistribution of fluids Compression forces in the central epithelium to induce movement of fluid from center to periphery Results in smaller cells in the center and enlarged cells in the mid periphery Thinner central corneal epithelium Positive pressure
- [Vision Shaping Treatment VST®](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/vision-shaping-treatment-vst-nq/) - Vision Shaping Treatment VST®FDA ApprovalsJune 2004: Bausch + Lomb receives approval for Boston® Orthokeratology lens marketed as Bausch + Lomb Vision Shaping Treatment VST® process for overnight orthokeratology using Boston® Equalens® II material (oprifocon A) December 2004: FDA supplemental approval for fitting using topography/software In June 2004, Bausch + Lomb acquired a premarket approval for
- [What is Vision Shaping Treatment VST®?](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/what-is-vision-shaping-treatment-vst-nq/) - What is Vision Shaping Treatment VST®?Vision Shaping Treatment is not a lens design but is an “umbrella” term for overnight orthokeratology incorporating: Approved design parameters in conjunction with an approved overnight material. There are 3 choices in approved VST® lens designs and fitting methods Topography-based fitting using software Diagnostic fitting Empirical fitting (Ks and Rx)
- [Vision Shaping Treatment VST® Process](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/vision-shaping-treatment-vst-process-nq/) - Vision Shaping Treatment VST® ProcessHow are designs approved to exist under the Vision Shaping Treatment umbrella? Design parameters must fall within the overnight orthokeratology approval (PMA #P100062) All designs must be reviewed and approved by Bausch + Lomb If using software – the software must be validated The laboratory must agree to manufacture the design
- [Boston® Equalens® II GP lens material](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training/modules/boston-equalens-ii-gp-lens-material-nq/) - Boston® Equalens® II GP lens material Approved for overnight wear Available tints: red, yellow, blue, green Oprifocon A Dk 85* (ISO/Fatt) Boston® Equalens® II gas permeable lens material has been available for a number of years in North America. It provides a significant amount of oxygen exchange having a Dk of 85 measured by the
- [What is Vision Shaping Treatment VST®?](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/what-is-vision-shaping-treatment-vst/) - What is Vision Shaping Treatment VST®?Vision Shaping Treatment is not a lens design but is an “umbrella” term for overnight orthokeratology incorporating: Approved design parameters in conjunction with an approved overnight material. There are 3 choices in approved VST® lens designs and fitting methods Topography-based fitting using software Diagnostic fitting Empirical fitting (Ks and Rx)
- [Central Keratometry Reading](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/central-keratometry-reading/) - Central Keratometry Reading Central Curvature of apical radius should be like the Keratometry reading. The normal cornea will flatten between 0.75 Diopter and 1.25 Diopters temporally When reviewing the patient’s topographical data, an important consideration is to see if the central curvature of apical radius is like the keratometry reading. If it isn’t, there may
- [Horizontal Visible Iris Diameter](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/horizontal-visible-iris-diameter/) - Horizontal Visible Iris Diameter Helpful in the determination of corneal eccentricity and lens diameter The measurement of the corneal diameter is helpful in the determination of corneal eccentricity and lens diameter. This measurement should be acquired manually with a HVID ruler or by topography for each patient.
- [Initial Examination](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/initial-examination/) - Initial ExaminationStandard Examination Measure Intraocular Pressure (IOP) Dry Eye Test Measure Horizontal Visible Iris Diameter (HVID) Measure pupil size in dim light Pupil position by topography The initial exam must include a standard eye exam to measure the refraction and a corneal evaluation to obtain K readings. The Horizontal Visible Iris Diameter (HVID) should be
- [Lens Design](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/lens-design/) - Lens Design Reverse Four Zone Lens Technology Shaping Zone (Base Curve) Recovery Zone (Reverse Curve) Alignment Zone Peripheral Zone The Shaping Zone, or Base Curve, positions over the pupil and is responsible for the flattening of the cornea to achieve desired myopic correction. Adjacent to the Shaping Zone, the steeper Recovery Zone, or reverse curve,
- [Possible Adverse Effects](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/possible-adverse-effects/) - Possible Adverse Effects Patient symptoms: Eyes stinging, burning, itching (irritation), or other eye pains Comfort is less than when lens was first placed on eye Feeling of something in the eye, such as a foreign body or scratched area Excessive watering (tearing) of the eyes Unusual eye secretions Redness of the eyes Reduced sharpness of
- [Patient Selection: Considerations](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/patient-selection-considerations/) - Patient Selection: Considerations Large pupils limit success Greater than 5mm in normal illumination Greater than 7mm in low illumination Treatment zone needs to be large enough to cover the pupil under these light conditions in order to avoid glare, reflections, and double images. Evaluate the pupil size accurately in both dim and normal illumination. Depending
- [Patient Selection for Ortho-K](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/patient-selection-for-ortho-k/) - Patient Selection for Ortho-KGood Candidates Moderate to low level myopes (-1.00D to -5.00D) < 1.50D astigmatism Corneal eccentricity (“e” values) of 0.5 and higher Soft lens / spectacle wearers Poor Candidates Against the rule astigmatism > 0.75D Low corneal eccentricity Current GP lens wearers Let’s discuss which patients are well suited for overnight orthokeratology. The
- [Peripheral Edge Curve](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/peripheral-edge-curve/) - Peripheral Edge Curve Flatter than alignment curve providing edge lift Movement, tear and debris exchange Slightly tighter than that of conventional GP lens designs The fourth curve, or peripheral edge curve, is flatter than the alignment curve, but slightly steeper than that of conventional lens designs providing an edge lift adequate for lens movement along
- [Alignment Zone](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/alignment-zone/) - Alignment Zone Closely aligns peripheral cornea providing a bearing zone Facilitates shaping lens centration The third zone is the alignment zone. This area is flatter than the reverse curve area and closely aligns the peripheral cornea providing a bearing zone to help the lens to center. Its main function is the optimizing of lens centration.
- [Reverse Zone](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/reverse-zone/) - Reverse Zone 3–5D (or more) steeper than BOZR Creates an annulus tear reservoir inducing negative pressure Allows “migration” of epithelial cells and intracellular fluid during overnight contact lens wear The second curve is most often termed the reverse zone and can have a radius of 5.0 to 9.0 millimeters, or is three to five diopters
- [Back Optic Zone Radius](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/back-optic-zone-radius/) - Back Optic Zone Radius Flatter than central corneal radius creating positive pressure Creates compression of central corneal epithelium Purpose: create “treatment zone” of 5mm or more The back optic zone radius, also termed the BOZR or base curve, is the first curve of Vision Shaping Treatment designs. Calculated to be flatter than the central corneal
- [Mechanism for Corneal Shape Change <br>How does Ortho-K Work?](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/mechanism-for-corneal-shape-change-how-does-ortho-k-work/) - Mechanism for Corneal Shape ChangeHow does Ortho-K Work?Reverse Geometry Ortho-K Shaping Lens Design Compression of cells with redistribution of fluids Compression forces in the central epithelium to induce movement of fluid from center to periphery Results in smaller cells in the center and enlarged cells in the mid periphery Thinner central corneal epithelium Positive pressure
- [Boston® Equalens® II GP lens material](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/boston-equalens-ii-gp-lens-material/) - Boston® Equalens® II GP lens material Approved for overnight wear Available tints: red, yellow, blue, green Oprifocon A Dk 85* (ISO/Fatt) Boston® Equalens® II gas permeable lens material has been available for a number of years in North America. It provides a significant amount of oxygen exchange having a Dk of 85 measured by the
- [Vision Shaping Treatment VST®](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/vision-shaping-treatment-vst/) - Vision Shaping Treatment VST®FDA ApprovalsJune 2004: Bausch + Lomb receives approval for Boston® Orthokeratology lens marketed as Bausch + Lomb Vision Shaping Treatment VST® process for overnight orthokeratology using Boston® Equalens® II material (oprifocon A) December 2004: FDA supplemental approval for fitting using topography/software In June 2004, Bausch + Lomb acquired a premarket approval for
- [Vision Shaping Treatment VST® Process](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/modules/vision-shaping-treatment-vst-process/) - Vision Shaping Treatment VST® ProcessHow are designs approved to exist under the Vision Shaping Treatment umbrella? Design parameters must fall within the overnight orthokeratology approval (PMA #P100062) All designs must be reviewed and approved by Bausch + Lomb If using software – the software must be validated The laboratory must agree to manufacture the design

## Topics

- [Topic](https://www.metro-optics.com/topics/topic/)
- [Irregular Cornea](https://www.metro-optics.com/topics/irregular-cornea/) - Keratoconus Ectatic Corneas Post-Surgical Corneas

## Certifications

- [Metro-K for Ortho-K Certification](https://www.metro-optics.com/courses/contamac-metro-optics-orthokeratology-basic-training-and-certification/certifications/metro-k-for-ortho-k-certification-2/)
- [Boston Metro-K Certification](https://www.metro-optics.com/courses/metro-optics-orthokeratology-basic-training-and-certification/certifications/boston-metro-k-certification/)

## Certificates

- [Optimum Infinite Metro-K Basic Training Certificate](https://www.metro-optics.com/certificates/optimum-infinite-metro-k-basic-training-certificate/) - Metro Optics Metro-K Certification Certification Exam Score: Certification Exam Completed On: Total Time Spent on Certification Exam:
- [Boston Metro-K Basic Training Certificate](https://www.metro-optics.com/certificates/boston-metro-k-basic-training-certificate/) - Metro Optics Metro-K Certification Certification Exam Score: Certification Exam Completed On: Total Time Spent on Certification Exam:

## Services

- [All Lens Types](https://www.metro-optics.com/service/all-lens-types/) - Contact LensesAll Lens TypesTeeth DENTAL SERVICES Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas sagittis mi faucibus risus auctor scelerisque. If you lost yoursIMPLANTS Nullam eleifend lectus a tortor interdum, non sodales ante vehicula. Proin consequat, at commodo. CosmeticDENTISTRY Curabitur nec interdum justo. Suspendisse in venenatis justo. Sed arcu velit, pulvinar eu consequat in,
- [Irregular Cornea](https://www.metro-optics.com/service/irregular-cornea/)
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- [Lens Surface Treatments](https://www.metro-optics.com/service/lens-surface-treatments/) - Plasma Surface Treatment: Improved Wettability and Initial Performance Gas Plasma Treatment of rigid corneal and scleral lenses greatly enhances their on-eye performance. It improves the adherence of lens wetting solutions and tear film to the lens surface thus eliminating dry spots that degrade comfort and visual acuity. Plasma treatment is merely a treatment and nothing
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## Notifications

- [Metro Optics Orthokeratology Basic Training and Certification Completion Notification](https://www.metro-optics.com/ld-notification/metro-optics-orthokeratology-basic-training-and-certification-completion-notification/) - Congratulations ! You have successfully completed the Optimum Infinite Metro Optics Metro-K Basic Training and Certification. You can access and download your certificate in your dashboard here. If you have any questions, please don't hesitate to reach out: info@metro-optics.com
- [Metro-K Basic Training User Enrollment Notification](https://www.metro-optics.com/ld-notification/atx-basic-training-user-enrollment-notification/) - Thank you for signing up for the Metro Optics Metro-K Basic Training & Certification! If you have any questions, please don't hesitate to reach out: info@metro-optics.com Click Here to Log-In

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