GP Lens Institute Newsletter | January 28, 2022


This newsletter is kindly sponsored by:

Menicon Logo.png

Welcome to 2022!

For the GPLI it will be a very memorable year . . . actually, it already is as you will see in the Global Specialty Lens Symposium review below. As a result of our fundraising program, we are developing several programs – to be introduced later this year and in 2023 – that will make a difference in the education of eye care professionals and students. This month we are highlighting the excellent webinar by Dr. Maria Walker on GP materials presented in December and our 17 component “Building Your Practice with GP Bifocals and Multifocals” resource which compliments the excellent webinar provided by Dr. Brooke Messer on January 25th.


GP Material Update

Maria Walker, OD, PhD, FAAO, FSLS

What’s New with GPs?

1) New hyper Dk materials

  • Acuity 200 (Acuity Polymers): Dk = 200
  • Contamac Infinite: Dk = 180

2) New coating advancements

  • Tangible Boost for HydraPEG lenses allowing the patient to refresh the surface coating

Oxygen Transmissibility

Which is more important with scleral lenses - lens Dk or tear fluid reservoir? Dr. Walker has found that increasing lens Dk (i.e., from 100-120 to 200) has been most effective.


1) Tangible HydraPEG: 90% PEG-based polymer covalently bonded to the contact lens. This is recommended to improve lens wettability and comfort. Any GP lens can be treated with HydraPEG after it has been manufactured.

2) Tangible Boost. Monthly use by patient to replenish the “topcoat” of the HydraPEG surface. It is obtained via a prescription and is available directly to the patient or through the practice.

Material Manufacturers

1) Includes Contamac, Boston, Paragon Vision Sciences, Acuity Polymers, Menicon, Innovision, and LifeStyle. They all typically have a low Dk (<60), moderate Dk (60 – 100), high Dk (100 +), and some have a hyper Dk (150+).

2) Low(er) Dk: These have less oxygen permeability, more rigidity and are less prone to scratches and deposits. They are recommended for rough handlers and heavy depositors

High(er) Dk: Easier to scratch and more deposit prone, they would be recommended for scleral designs, overnight wear (i.e., orthokeratology), and high refractive errors.

Watch the Webinar


GP Multifocal Fitting and Problem-Solving

Brooke Messer OD, FAAO

So Why Fit Presbyopes Into Contact Lenses?

1) Amazing Relationships

2) Awesome loyalty to prescriber and office

Patient Communication: Setting Expectations

1) Use words like: balancing the vision demand in the contact lenses, functional vision, freedom from glasses

2) Avoid using: less than perfect, less crisp, glasses will always be better

3) “I want you to be able to do most things, most of the time

Aspheric GP Lenses

1) Good candidates

  • Habitual GP wearers with well-centered lenses
  • Low-moderate adds but high adds can be successful also
  • Active patients will appreciate lens stability
  • Small-average pupils

2) Empirical Fitting

  • Provide Rx, add, pupil size, HVID, and lid positions
  • Zone sizes can be made custom for specific patient measurements
  • Lens should be well-centered, alignment with fluorescein, about 1mm movement with the blink, and should move slightly upward with downward gaze

3) Check lens fitting relationship before over-refracting

4) Use your CLMA laboratory consultant on all questions

Translating GP Lenses

1) Great Candidates

  • Patients with large pupils
  • Visually demanding patients

2) Poor Candidates

  • Patients with loose lower lids or tight upper lids
  • Patients with low positioned lower eyelids

3) Fitting

  • Rests on lower lid in primary gaze and shifts upward – or translates – when dropping eyes to read
  • Limited movements on the blink ( < 1mm)
  • Prism ballasted and segmented; ideal seg height is at lower pupil margin or just below

Scleral Multifocal Lenses

1) Good Candidates

  • Current scleral lens wearers who become presbyopic
  • Irregular cornea and post-refractive surgery patients (absence of scarring)
  • Dry eye patients

2) Fitting

  • There are not typically diagnostic sets so if it is a present scleral lens wearer you can provide specifications, add power, and any other information desired by laboratory
  • Otherwise, you can fit a scleral lens as you have with single vision patients
  • As scleral lenses tend to decenter slightly inferior-temporally, some designs have decentered optics (i.e., optical center is slightly sup-nasal).
  • These are typically center-near designs
Watch the Webinar


Webinar Ad - Feb2022.png

The February webinar is kindly sponsored by:

Contamac, Acuity Polymers, and BostonSight

February 15th

Scleral Lens Primer

by Lynette Johns, OD, FAAO, FSLS

March 15th

Enhancing Specialty Lenses Through Performance-Enhancing Drugs

by Mile Brujic, OD, FAAO

April 7th Student Webinar

The Nuts and Bolts of Orthokeratology

by Ariel Cerenzie, OD, FAAO, FSLS

April 19th

Incorporating Technology into Today’s Contact Lens Practice

by Barry Eiden OD, FAAO, FSLS

Learn More and Register


Building Your Practice with GP Bifocals and Multifocals


This module – located here, under Education by Lens Type: Presbyopia / Multifocals - is a comprehensive 17 component resource which includes resources for the eye care professional (ECP), staff members, and patients. For the ECP there are videos and powerpoint presentations on how to present GP multifocals, how to select the appropriate option, fitting and evaluation, and marketing this modality. In addition, there is a professional fee calculator to help in determining the appropriate fees; this resource can be used with any GP or custom soft lens patient. For staff members there is a video on how to handle patient telephone inquiries, scripts to answer patient questions, a glossary of terminology, and a video on how to handle these lenses. There is also a consumer brochure on the benefits of GP multifocal lenses.

Order Printed Materials

Orders shipped to the US only - 200 of each complimentary including shipping



We have almost 3000 GP specialists with their area(s) of specialty listed to assist you when you need to refer a patient or for patients looking for a GP specialist as this resource is also available on our consumer site: If you are interested in signing up to be a referral GP lens practitioner, you can do so here

Specialties Include:

General GP Contact Lenses

Bifocal/Multifocal Contact Lenses

Contact Lenses for Irregular Corneas

Corneal Reshaping / Orthokeratology

Scleral Lens Designs

Submit Your Practice


Save the Dates for our 2022 Webinar Series


Our 2022 webinar series is set! Save the dates:

2/15 Scleral Lens Primer

3/15 Enhancing Specialty Lenses Through Performance-Enhancing Drugs

4/7 Student Webinar:

The Nuts and Bolts of Orthokeratology

4/19 Incorporating Technology into Today’s Contact Lens Practice

5/17 Specialty Contact Lens Coding and Billing Update

6/21 Spherical and Toric GP Lens Design, Fitting, and Problem-Solving

7/19 How to Incorporate Orthokeratology into Contact Lens Practice

8/16 Specialty Contact Lens Grand Rounds: The Decision-Making Process

10/20 Custom Soft Lens Update

10/18 Scleral Lens Research and Clinical Implications

11/15 Contact Lens Care and Compliance Update

12/20 Corneal Cross-Linking and Contact Lenses: The Decision-Making Process

Webinar Info & Register



The GP Lens Institute is now on Instagram! 🎉 Follow us here.


Elevating Women in Eye Care

Sunday, March 20, 2022

6 hours of COPE approved CE

Online via Zoom

8:00 am - 1:00 pm PST

Cost: FREE

More Info

Register for Event



“I wouldn’t be in the position I am today without gas permeable lenses. They have provided me stability and excellent vision while playing the game I love. As a person with keratoconus, I’m truly thankful!”

– Tommy Pham

Major League Baseball player



The GP Lens Institute was, once again, a Gold sponsor for the 2022 GSLS, held January 19-22 in Las Vegas. The GPLI held a Board of Directors Meeting, had a booth in the exhibit hall, sponsored a track of education, held a contact lens educator’s advisory meeting, and hosted the ultimate celebration at the conclusion of the meeting with our annual “Rising Stars” Reception. Nine deserving individuals were honored as part of this awards program. These awards included the highest award from the CLMA, the Josef Dallos award, and the highest award from the GPLI, the GPLI Practitioner of the Year.

The evening was highlighted by keynote speaker, major league baseball player Tommy Pham, who discussed his history of being diagnosed with keratoconus and how he was able to overcome all odds to succeed at the highest level. He also co-presented – with National Keratoconus Foundation Executive Director Mary Prudden – the award in his name to a very deserving Dr. Barry Eiden. He then was kind enough to be photographed with many of the attendees including the GPLI Advisory Board. Watch Tommy's presentation here.

Those being honored by the CLMA included the following:

Josef Dallos Award

Presented to:

Dr. Paul Rose

Trailblazers Award

Presented to:

James Bonafini, Jr.

Industry Enhancement Award

Presented to:

Roger Zimmer

Creative Design and Process Award

Presented to:

Christine Sindt, OD, FAAO, FSLS

Honorary Recognition Award

Presented to:

Ken Leonhard

The GPLI honored the following four individuals:


Dr. Edward S. Bennett

GPLI Educator of the Year

Presented to:

Jennifer Harthan, OD, FAAO, FSLS


Thomas E. Anastor

GPLI Distinguished Service Award

Presented to:

Edward S. Bennett, OD, MSEd, FAAO, FSLS


Thomas J. “Tommy” Pham

GPLI-NKCF Keratoconus Practitioner of the Year

Presented to:

Barry Eiden, OD, FAAO, FSLS


Naomi “Jo” Svochak

GP Practitioner of the Year

Presented to:

Stephanie Woo, OD, FAAO, FSLS

View the Full "Rising Stars" Presentation

About the GPLI


Edward S. Bennett, OD, MSEd, FAAO, FSLS

Professor Emeritus, University of Missouri St Louis College of Optometry

President and Executive Director, GP Lens Institute (GPLI)

The Gas Permeable Lens Institute is dedicated to providing eyecare professionals with unbiased educational and practice-building resources highlighting GP and custom manufactured soft contact lenses.

Please support the educational opportunities provided by the GP Lens Institute. We will continue to support all ECPs, staff and your patients. Be kind, respectful and find happiness within yourself!! Happy holidays!

Thank you again to our newsletter sponsors

Menicon Logo.png


Facebook  Twitter  LinkedIn  Instagram
Support the GPLI