LENS KNOW-HOW IN FOUR STEPS

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Glean the latest about lenses to choose the best treatment plan for your patients.  

There are four main elements for knowing how to properly dispense today’s premium lens products. First and foremost, the optics-or design-of the lens has the greatest impact on the visual performance. Second, the surface of the lens determines its durability and also represents the portion that interacts with light (both from a reflective and refractive standpoint). Third, the filter determines the type and intensity of the electromagnetic energy in the form of visible light, ultra-violet light, or infrared energy that will reach the eye. Finally, the substrate-or material-of the lens will determine its impact resistance, cosmetic, and comfort performance.

It’s also important to pay attention to the proper fitting for all lens designs and how that affects patient comfort and visual acuity. Here’s a comprehensive look at the latest in lenses:

Design
To learn about the latest in design, it’s important to have knowledge of the corrective curve lenses of the past including “typical” aspheric, digital, and both single vision and progressive lenses including “as-worn.” The technology has evolved to create custom designs to meet individual patient’s needs. There are options available to provide your single vision patients with a far superior visual experience than previously available. For example, task-specific lens designs allow your patients to become more productive in the work environment and reduce eye fatigue.

Surface/Coatings
The surface of an ophthalmic lens determines its lifespan as well as the cosmetic appeal of the lens and the satisfaction of the wearer. A scratched or smudged surface will have an image of reduced quality. Likewise, a surface that reflects significant amounts of light will provide less than ideal performance to the wearer. All lenses should have a durable hardcoating with a multi-layer AR stack that includes a conductive layer and hydrophobic properties. Make sure to to discuss the different AR coatings available.

Substrates
It’s essential to understand the various lens materials available and how to recommend the appropriate one for your patient. Choosing the proper material based on your patient’s Rx will greatly increase your patient satisfaction rate and optical performance.

Filters
There are a host of options including UV, photochromic, HEV, polarized, fixed tint, and specialized filters. Be aware of the different filters available to protect and enhance your patients’ visual acuity.

Spectacle Lens expert track
Michael Vitale will deliver three education sessions and moderate a fourth at International Vision Expo West as part of the Spectacle Lens Expert Track, supported by Essilor of America, Inc. and VCPN. The Spectacle Lens Expert Track has 12 hours of courses Sept. 17-19. To register for this course, and to see what other courses are available at International Vision Expo West, please visit: www.visionexpowest.com/VCPNSpectacleLens.

Michael Vitale is the Lens Division Liaison to The Vision Council.

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