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Polycarbonate lenses
- Trivex lenses
- High index plastic lenses
- Aspheric lenses
Photochromic lenses
- Polarized sunglasses
Progressive Lenses - Multifocal Eyeglass Lenses
- Bifocals
- Trifocals
Crizal Lenses -- Varilux Lenses
These eyeglass lenses are impact-resistant and are a good choice for people who regularly participate in sporting activities, work in a job environment in which their eyeglasses may be easily scratched or broken, and for children who may easily drop and scratch their eyeglasses. Polycarbonate lenses also provide ultraviolet protection.
Made from a newer plastic with similar characteristics of polycarbonate lenses. It is lightweight, thin and impact-resistant and may result in better vision correction than the polycarbonate lenses in some people.
Designed for people who require strong prescriptions, these eyeglass lenses are lighter and thinner than the standard, thick "coke bottle" lenses that may otherwise be needed.
These eyeglass lenses are unlike typical lenses, which are spherical in shape. Aspheric lenses are made up of differing degrees of curvature over its surface, which allows the lens to be thinner and flatter than other lenses. This also creates an eyeglass lens with a much larger usable portion than the standard lens.
Made from either glass or plastic, these eyeglasses change from clear to tinted when exposed to sunlight. This eliminates the need for prescription sunglasses. These eyeglass lenses may not darken in a car because the windshield could block the ultraviolet rays from the sun.
Light reflected from water or a flat surface can cause unwanted glare. Polarized lenses reduce glare and are useful for sports and driving. These lenses may cause the liquid crystal displays on the dashboard of cars to appear invisible.
The type of vision problem that you have determines the shape of the eyeglass lens. For example, a lens that is concave, or curves inward, is used to correct nearsightedness, while a lens that is convex, or curves outward, is used to correct farsightedness. To correct astigmatism, which is caused by distortions in the shape of the cornea, a cylinder shaped lens is frequently used. Simply put, the eyeglass lens is a tool you use to focus light appropriately on your retina.
People who have more than one vision problem often need eyeglasses with multifocal lenses. Multifocal lenses, such as bifocals and trifocals, are eyeglass lenses that contain two or more vision-correcting prescriptions. In years past, you could spot a multifocal lens by the line separating the two sections. But today multifocal lenses, called progressive lenses, can be made to look seamlessly attractive. No one but you and your doctor will ever know!
Bifocals are the most common type of multifocal lens. The eyeglass lens is split into two sections; the upper part is for distance vision and the lower part for near vision. They are usually prescribed for people over the age of 40 whose focusing ability has declined due to presbyopia. Presbyopia is an age-related change that affects the natural lens in the eye.
Trifocals are simply bifocals with a third section used for people who need help seeing objects that are within an arm's reach. This additional segment is above the bifocal portion of the lens and is used for viewing things in the intermediate zone; for example, looking at a computer screen.
See it all with
Crizal — the advanced eyeglass lenses that change the way you see life. Crizal lenses are unlike any others because they can help you not only to see better, but to feel better and look better while wearing your eyeglasses. You spend so much time choosing the right eyeglass frames — shouldn’t your lenses be just right for you, too?
Varilux by Essilor has been the leader in progressive lens science since they developed the first pair in 1969. Today, they have advanced progressives further than ever.
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