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Education

Evaluating and Dispensing a Corneal GP Lens

A Simple Approach

Evaluating a corneal GP doesn’t have to be complicated. Start by allowing the lens to settle for at least five minutes before evaluating the fit.

Then assess movement, fluorescein pattern, vision, and comfort.

Simply send your findings to Consultation so they can make any necessary adjustments.

Evaluation

  • Movement: Ideally, the lens should lift with the upper lid at blink, and drop to a centered position immediately following the blink.
  • Fluorescein Pattern: Evaluate the fluorescein pattern and note any areas of touch, or excessive pooling. Some pooling is acceptable, so long as there are no bubbles and visual acuity is good.
  • Corneal Staining: Remove the lens and evaluate the cornea for any staining.
  • Vision and Comfort: Note the patient’s visual acuity, over-refraction, and over-all comfort.

If possible, sending photos or videos of the lens on-eye are extremely helpful for the consultants when refining the fit.

Dispensing

Once the fit, vision, and comfort are acceptable:

  • Provide insertion and removal training.
  • Have the patient watch the insertion and removal videos before practicing.
  • Set the expectation regarding the adaptation period.
  • Provide written care instructions, including approved solutions and where they can be purchased.
  • Schedule the recommended follow-up visits.

Need help with a fit?
Our Consultation Team is available to review your findings and help determine the next step.

CONSULTATION: 800-223-1858
EMAIL: info@metro-optics.com

Learn more: When to Fit a Corneal GP

Sincerely,
Your Metro-Optics Team

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When to Fit a Corneal GP?

When Corneal GPs Are a Good Fit

With so many soft and scleral lens options available today, it can be easy to overlook corneal GPs.

But for the right patient, a corneal GP can still be one of the simplest ways to deliver crisp vision and maintain a healthy ocular surface, all while providing a highly customized fit.

Fitting corneal GPs is simple. No diagnostic fit set is required for most Metro-Optics GP lens designs.

For patients who cannot successfully wear glasses or standard contact lenses, corneal GPs remain a reliable, tried-and-true option. 

When to Consider a Corneal GP

  1. Irregular corneas
  2. Keratoconus
  3. Post-surgical corneas
  4. High prescriptions
  5. Patients wanting sharper vision than they achieve in soft lenses
  6. Patients who need customization outside standard soft lens parameters
  7. Presbyopes who may benefit from a multi-focal design

Ordering is Simple

Call or email consultation the following information:

  • K Readings
  • Manifest Rx
  • HVID

For Metro-Progressive lenses include:

  • Spectacle Add
  • Pupil Size

Include pertinent patient information.

  • Hydra-PEG is available
  • The lenses arrive within 2-4 business days

Need help with a fit?
Our consultants are available to walk you through the process.

CONSULTATION: 800-223-1858
EMAIL: info@metro-optics.com

Learn more: Evaluating and Dispensing a Corneal GP Lens

Sincerely,
Your Metro-Optics Team

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MetroSoft Max Mild Astigmat

 

Delina Patel, OD
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.

Prescribed lenses:
MetroSoft Max (Polymacon)

Learn more

Outcome:
Patient was happy. “These feel great!”
BCVA: 20/20 OU

Help More Patients in Your Area:
Find Vision Republic on our Physician Locator page as a specialty contact lens practice. Is your practice on the map? Check here.

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Successful Adult Metro K Fitting-Outcome

 

Dr. Chau
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 is looking for an alternative to wearing contact lenses at work and has expressed interest in Ortho-K as a solution to meet her visual needs in her career.

Ocular History:
She has tried both monthly and daily contact lenses in the past but experienced issues with GPC. As a result, corneal GP lenses were not a suitable option for her either. 

Prescribed lenses:
Metro K lens in Boston XO material. Managing her GPC has been a top priority over the past 16 months to maintain comfort and VA.
OD: -3.50 -0.75 x 171
OS: – 3.75 -1.00 x 016

Learn more

Outcome:
Patient wears her Ortho-K lenses for 8 hours each night and remains uncorrected during the day.
BCVA: 20/20 OU

Help More Patients in Your Area:
Find Vision Republic on our Physician Locator page as a specialty contact lens practice. Is your practice on the map? Check here.

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MetroSoft Max

Maximum Astigmatism

MetroSoft Max stands for “maximum astigmatism,” and is designed for patients whose visual needs aren’t 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 material
Power: -12.00 to +12.00
Diameter: 14.0, 14.2 depending on lens design
Prism: 1 Diopter

Extended parameters are available.

Ideal Patient

Any astigmatic case with up to 8.00 diopters of corneal cylinder.

Stable Vision

The Metro Soft Max is indicated  for patients with 2.00D or more of corneal astigmatism. The cylinder correction is incorporated into the back surface of the lens, which aligns with the irregular curvature of the cornea.

This results in a “saddle-fit,” which stabilizes the lens on the cornea, improving comfort and VA compared to a spherical contact lens.

Latheable Materials

Our soft contact lens line is available in three materials, listed below. Our consultants will work with you to determine the best material for your patient, with ocular surface health as our top priority.

  1. Polymacon: 38% water standard hydrogel
  2. Hioxyfilcon-B: 49% water standard hydrogel
  3. Definitive SiHy Efrofilcon-A: 74% water, 60 Dk (first latheable Silicone Hydrogel Material)
    Learn More

Replacement schedule

Planned replacement is at the discretion of the doctor. The life of the lens will depend on how well the patient cares for the lenses. Multi-packs are available up to annual supply.

How to Order

Send consultation the following information:

  • K Readings
  • Manifest Rx
  • HVID

Happy Patients

“You can wear contacts!” We’re here to help show your patients what’s possible with custom contact lenses.

CONSULTATION: 800-223-1858
EMAIL: info@metro-optics.com

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Successful Myopia Management with Metro-K Lenses

Beth Robinson image

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 is OD -1.50 -050 x 090 and OS -2.00 -0.25 x 063. Her current daily contact lenses are -1.50 DS and -2.00, OD and OS respectively. She prefers an
over-refraction of -0.25 each eye revealing possible progression in myopia over a six-month period.

Prescribed lenses:
Metro K lens in Boston XO material.

                     Base Curve       Power       Diameter       Reverse Curve
OD                8.18                   +0.75          10.60               7.30
OS                8.23                   +0.75          10.60               7.30

Learn more

Outcome:
Patient wears Ortho-K lenses most nights for 8 hours on average and remains uncorrected during the day.
Resulting vision: OD VA 20/20, OS VA 20/20
Manifest Refraction: OD plano, OS plano
The patient loves her new form of vision using the new lenses while also managing any myopic progression.

Help More Patients in Your Area:
Find the See B. Seen Eyecare + Optical Bar on our Physician Locator page as a specialty contact lens practice. Is your practice on the map? Check here.

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KeraSoft Lenses for Keratoconus, Intacs & Crosslinking

Keratoconus, intacs, crosslinking, ICO

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 IC STD
Learn more

Outcome:
20/20 OD
20/20-1 OS
Patient reports great vision and comfort all waking hours of day. She spends 8-10 hours per day on the computer and has no difficulties with lens wear.

Help More Patients in Your Area:
Find the Illinois College of Optometry on our Physician Locator page as a specialty contact lens practice. Is your practice on the map? Check here.

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Patient Outcome: Post-PKP Corneal GP Lens Fit

Dr. H NaCl patter RSb

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 conjunctivitis, s/p PKP OS.

Prescribed Lenses:
RSB OS

The RSb Lens is our post-refractive surgery lens, reverse geometry configuration.
Learn more

Outcome:
Patient was 20/200 with her glasses and with the RSB lens, her VA improved to 20/25+. She is thrilled with her VA and improvement in quality of VA.

Help More Patients in Your Area:
Find the Illinois College of Optometry on our Physician Locator page as a specialty contact lens practice. Is your practice on the map? Check here.

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Patient Outcome: Successful RSb Corneal GP Fitting for Post-Surgical Cornea

Dr. Shelby Gross

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 eye when trying to insert them. 

Ocular History:
LASIK and cataract surgery OU. Patient had a retina detachment with a scleral buckle in his right eye. Severe dry eye.

Prescribed Lenses:
RSb front toric lens OD for monovision. Dr. Gross started him on a therapeutic regimen to optimize the ocular surface.We selected a well tinted corneal GP to assist in handling the lens during insertion.

OD: -4.00 -3.50 x 090

The RSb Lens is our post-refractive surgery lens, reverse geometry configuration.
Learn more

Outcome: BCVA 20/20
He is very happy with the outcome.

Help More Patients in Your Area:
Find Heights Vision Specialists on our Physician Locator page as a specialty contact lens practice. Is your practice on the map? Check here.

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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.

Order GP lenses empirically, without any lens design calculations. Simply send the following patient information to consultation.

Exam Information

  • Corneal Topography
  • Keratometry Readings (Auto-K works well)
  • Manifest Refraction
  • Pertinent Patient History (surgery, trauma, past contact lens wear)

This information helps us understand the corneal shape & curvatures we are attempting to fit. If you don’t have a topographer, that’s okay!

GP Lens Designs

All major brand materials are available including Hyper Dk materials.

  1. Standard Spherical GP
    Less than 3.00D Astigmatism
  2. Specialty GP Designs
    Toric lens options: base, front surface, bi-toric designs
  3. Metro Progressive Multifocal GP
    Presbyopic patients
    Up to 3.00D ADD

sphere (left) versus toric (right)
Spherical Lens on Left & Toric Lens on the Right

4. MetroSeg Translating Bifocal GP
Segmented Bifocal
Up to 3.00D ADD
5. RSa or RSb Post – Surgical GP
Post-surgical lens
Vaults central corneal irregularity

RS stands for Refractive Surgery
RSa: Spherical configuration
RSb: Reverse geometry configuration

Hydra-PEG

You have the option to Hydra PEG the lens which is a 90% water PEG (polyethylene glycol) coating that is covalently bonded to the surface of the lens. Hydra PEG improves wettability, comfort and clarity.
Learn more

Do What You Can

If you don’t have all the information listed above, don’t worry! Our experienced consultants can design a lens based on the details you provide. The more accurate information we receive, the faster we can get the final lens to you.

We are here to support you every step of the way!

Sincerely,
Your Metro-Optics Team

CONSULTATION: 800-223-1858
EMAIL: info@metro-optics.com

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