Eyeglasses: Different types of lenses

Eyeglasses today are very much part of the fashion statement. An eyeglass with a suitable frame can enhance your look and boost your overall personality. Initially lenses of your prescription sunglasses, sporty glasses as well as other designer and regular eye glasses were exclusively made of glass. Today, high tech plastics are used in the manufacturing of the lenses which are comparatively lighter and not easily breakable as glass. As compared to the traditional plastic or glass lenses, these new lenses are considerably thinner, lighter and scratch resistant. Given below are some of the modern eye glass lenses:

Polycarbonate Lenses:
Polycarbonate lenses are made of a special type of plastic which are impact resistant. It is therefore a good choice for your sporty glasses or even for children's eye wear. With young kids around, there is an increased chance of breaking your glasses or developing scratch on it. In such a case, polycarbonate lenses serve the purpose of your safety lenses. Polycarbonate have a built in ultra-protection as a result of which, they are also a good choice for the prescription lenses of your eyeglasses

Polarized Lenses:
These lenses are commonly used to make designer or prescription sunglasses. The unwanted glare that is created with the reflection of the light on to the flat surface or in the water is reduced to a great extent by the polarized lenses. The display of liquid crystal on the dashboard of cars can be made to disappear with the use of polarized lenses. These lenses can therefore be used for your sporty glasses as well prescription sunglasses or any other glasses that you wear while driving.

Trivex Lenses:
Trivex lenses are made from a different and a new material which are similar in characteristics to that of a polycarbonate lenses. However these are not as thin as polycarbonate lenses but are lighter in weight and have higher optical quality as compared to the polycarbonate lenses. They are generally prescribed for children's eyeglasses and sporty glasses. In some people, Trivex lenses may lead to better vision correction as compared to the polycarbonate lenses

Aspheric lenses.
Aspheric lenses are different from the typical spherical shaped eyeglass lenses. The differing degree of peripheral curvature allows the lens to be thinner and flatter as compared to the regular spherical lens. Flatter curvature over the surface of the Trivex lenses helps in reducing the distortions that occur while looking away from the lenses.

High index plastic lenses.
These are the thinnest material that are available and are extremely light weight and are comparatively easy to tint. These are basically designed for people having strong prescription especially for their prescription sunglasses or any other eye wear with strong prescription.

Photo chromic lenses.
Photo chromatic lenses are the most popular eyeglasses lenses that have the ability to change color when exposed to sunlight. Photo chromatic lens is good option for someone who does not intend to carry a separate pair of prescription sunglasses. These lenses changes color only when they are exposed to sunlight, while driving, the ultra-violate rays from the sun are blocked by the wind shield. This prevents the darkening of the lenses in the car. Even your sporty glasses can have photo chromatic lenses.