Aspheric lenses—ideal lens option for prescription sunglasses

Generally, there are four types of lens material available in today’s market: Glass Lenses, Plastic lenses, Polycarbonate Lenses, High index Plastic lenses with aspheric Design. Among these lens types, high index lenses with aspheric design could offer wearers the best aesthetic appearences, they could also make their eyes look more natural.

Compare to conventional lens designs, lenses with “Aspheric” Design are more flat and thinner, in addition, they will reduce or eliminate distortions for a wider field of view and better peripheral vision. The direct benefit we can get from aspheric lenses is that they can make your face or eyes look normal. Though aspheric lenses could offer advantages for all prescriptions, they are particularly beneficial if you are farsighted. To correct farsightedness, the conventional lenses are thick at the middle. The eyes will look large for us. Aspheric lenses will reduce the magnified, “bug-eye” look, they strongly reduce the “bulge” of the lenses from the frame.

Lens thickness is an important factor that is considered by most eyeglass wearers. How thick the edge of a lens will directly affect the appearance of our eyes. In the past few years, people who had a high prescription could only wear thick and heavy prescription sunglass lenses, for the high index thinner lenses can not be tinted due to their high density. Nowadays, lens advances have enabled corrective eyeglass wearers to go with thinner aspheric lenses. They can be tined with various lens color such as, blue, grey, brown, G-15, etc.

Currently, nearly all designs are possible in case of aspheric lenses including bifocals, progressive addition lenses. Keep in mind that aspheric lenses have flatter curves than regular lenses which will cause more noticeable reflections. You are highly suggested to add the Anti-reflective (AR) coating on this type lenses to reduce reflections. The aspheric lenses are a bit expensive than the conventional lenses. But you can also get large benefits derived from these lenses.

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