Glossary of Terms

Eyeglass.com has created a glossary of terms to assist you during the ordering process. We want you to choose the products that suit your needs best. Below is a glossary of terms outlining our lens material, multi-focal lens and coating options.

If you would like further assistance with your order, please call 1-800-808-0895 or email us at info@eyeglass.com . Our customer service staff will be happy to assist you.

Eyeglass Lens Material Options:

Choose from standard lenses, to super thin, super light lenses. We have a wide variety to meet every frame and budget (note: the higher the index number, the thinner the lens).

Standard Plastic, 1.50 lens index, $46.00

The most economical lens choice. Offers excellent optical clarity. Due to its thickness, standard plastic lenses are not recommended for higher prescription powers. Can be easily tinted to dark sunglass shades and accepts anti-glare coating.

Polycarbonate Safety, 1.59 lens index, $75.00

This lens material is recommended for children under the age of 18 or wherever safety is a primary concern. Polycarbonate eyeglass lenses are the best choice for the safest and one of the lightest lenses available. They are ten times more impact resistant than Standard lenses and are the preferred lenses for safety eyewear and sports frames. This lens material is required for rimless frames and drill mount half-rim frames.

High Index Thin, index varies, see below

These lenses are made from a plastic material that has a higher index (1.60) than standard plastic lens. They provide the same correction using thinner lenses which make High Index Thin lenses one of the best aesthetic choices. These lenses are lighter and more comfortable. Anti-glare coating is essential for the best optical performance and appearance.

High Index Thin
1.60 index: $89
1.67 index: $135
1.74 index: $299

Ultra Thin, 1.67 lens index,

These eyeglass lenses are super thin. In general, for a given prescription, the higher the (refractive) index, the thinner the lenses will be.

Ultimate Thin, 1.70 lens index,

The thinnest and lightest choice for your prescription.

Glass, 1.52 lens index, $75.00

Glass is an excellent choice for optical performance and scratch resistance. However, these lenses are thicker and heavier than its plastic counterparts. If optical performance outweighs your preference for lighter, thinner lenses, then this is a good option for you. Orders for glass lenses can take 3-4 weeks to complete.

Standard Rimless $50.00

Trivex Rimless: 1.53 index $100.00

The Trivex High Index lens has a 1.53 index of refraction and has impact resistant properties similar to polycarbonate. It was designed specifically for drill mount frames and is manufactured by Younger™ and is not as easy to scratch as Polycarbonate. These lenses have UV protection built in blocking 100% of the sun’s harmful UV rays. Trivex lenses are also impact resistant which make them perfect for children’s lenses, sports goggles, and safety glasses. One of the newer and more popular brands of High Index materials on the market today is Trivex.

Multi-Focal Eyeglass Lenses

Multi-focal lenses are prescription lenses with more than one focal point, like bi-focal or progressive lenses.

Basic Progressive $69

Basic Progressive lenses are eyeglass.com’s standard varifocal lenses. They offer a distance area and an intermediate area, combined with a wide reading area so that your eyes can adapt to different focal lengths with ease.

The back surface of the lens has different curves to reduce peripheral astigmatism - the distorted vision which can happen because the eye is not spherical. Basic Progressive lenses are available in a choice of materials from conventional plastic through to ultra thin 1.74 and are tailored to individual prescriptions.

Image Select Progressive $135

The Image contains one of the widest distortion-free distance zones in the industry. Provides generous intermediate and near zones. The Image brand is an industry leader in overall adaptation rates of progressive wearers.

Shamir Genesis $163

Considered one of the most “user-friendly” progressives, this lens has a wider viewing area, more intermediate area, and an increased reading area. There is enhanced vision clarity in every vision zone and peripheral vision is improved. It is the first progressive lens designed through an exact simulation of the human eye.

Zeiss Gredal $189

Extremely gentle transition from near-vision to distance; the eyes glide smoothly and comfortably from the distance to the near zone. Fully aspheric lens surface reduces distortions and astigmatism with up to 33% wider progressive zone guaranteeing rapid adaptation and outstanding wearing comfort.

Vari-Lux Comfort $179

The Vari-Lux progressive is the first progressive lens ever designed (in 1959) and is one of the most popular progressive lenses prescribed. This lens provides natural vision at every distance. Soft periphery minimizes unnatural head movement, providing a more comfortable posture in all situations.

Vision moves smoothly from one area of focus to the next. Its high and wide near-vision area provides a more comfortable and efficient use of the near-vision field. Quick and easy wearer adaptation.

Vari-Lux Physio $215

Newer design of Vari-Lux with less distortion and a bigger viewing area. A good choice for those who would like to upgrade from the Vari-Lux Comfort. Provides sharpened acuity where wearers need it most for distance.

Intermediate vision reduces astigmatism by adjusting the axis vertically to make vision more comfortable. Near vision has an extended area, allowing the eye to use a larger area of the lens comfortably, with greater sharpness and comfort. In low light, wearers have more control of distortions and are allowed more power and precision.

Vari-Lux Ellipse $215

Used mainly for frames with smaller lens areas. This progressive, with a fitting height as low as 14 millimeters, brings unmatched performance to even the smallest frames. Has a high satisfaction rate thanks to a design that adapts to viewing behavior and maximizes the small frame wearer's visual space.

A/R Coatings

Anti Reflective/ Anti Glare (A/R) Coatings should be applied to every lens if budget allows. Tests have shown increased visual acuity, and less eye fatigue when glare is reduced. There are many forms of coatings, however the effective coatings are applied, not dipped, in a clean-room environment. Eyeglass.com only dispenses applied coatings that pass careful inspection.

iCoat (Standard house brand) $55

Our standard coating is affordable without compromising quality. This coating gives you clearer vision, safer night vision, reduced eye-strain and virtually invisible lenses. The coating is applied to both sides of each lens, allowing 99.5% of available light to reach your eyes. It repels water, smudges and dust which make the lenses very easy to clean.

Zeiss Coating $70

Zeiss has been making anti-glare for years and is so durable that it is used on camera lenses. Zeiss coating helps diminish glares which enable you to see better. It also enhances your vision and appearance by getting rid of the reflections that others see in your glasses. In addition, Zeiss coatings make your lenses 6 times stronger than uncoated lenses, making them harder to scratch.

Stainless AR with Hard Coat $85

This is a premium coating that reduces glare and annoying reflections. It increases visual acuity and improves cosmetic appearance. This coating repels water, grease and oils for effortless cleaning. It has unparalleled anti-static properties to help lenses stay clean longer. It is also incredibly scratch resistant so lenses last longer.

Crizal Alize' $150

This coating makes your lenses appear virtually invisible. They are extremely durable, scratch resistant and easy to clean. The coating is applied in triplicate and is double sided to repel water. Crizal eliminates reflections that cause eyestrain and fatigue, especially from fluorescent lighting and computer screens. They resist dirt and smudges so you don't have to clean them as often.