Types of Eye Glass Lenses
Eyeglasses no longer invokes the "four eyes" or "nerd" comments because the latest styles turn them into fashion accessories. You are not bound by thick lenses made entirely from glass, because innovations in plastics have made glasses much lighter. The extra features, such as scratch and glare resistant coatings, also add a level of protection. As a result of all these cutting-edge changes, there are many different types of eyeglass lenses to consider during your next trip to the optometrist.
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Photochromic
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Eyeglasses with these lenses may be plastic or glass and transition from clear to tinted when exposed to sunlight.
Polycarbonate
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Thinner than the basic plastic eyeglass lens, this type provides UV protection as well as resistance to high impact activities, such as sports or simple wear and tear.
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Aspheric
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Flatter and skinnier than other eyeglass lenses, aspheric lenses present different degrees of surface contour that allow for a larger area of the lenses to be used, unlike traditional spherical shapes.
High Index Plastic
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Thick glasses are a thing of the past with these thin, lightweight lenses that are perfect for strong optical prescriptions.
Progressive
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Multi-focal eye glass lenses have visible lines separating the varying prescriptions needed for near and far vision. With progressive lenses, the transition is seamless as there are no visible lines.
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