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 firstname.lastname@example.org . 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
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 $100.00The 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
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
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.
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
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.