The Lens Index number (1.50, 1.57, 1.59, 1.61, 1.67, ) are the degree of refraction the lens provide click here
We Sell optical eyeglasses with UV protection and Anti Reflection Coating Click here to know more.
Photochromic lenses are Special lens which on exposure to UV light turns dark. Click here to know more
Sunglasses lenses which also reduces the glare from light are called polarized lenses click here to know more

Polycarbonate lenses are lenses which are impact resistant, stronger and more light weight than standard lens, Click here to know more about all lens index and material.

If you are willing to turn your prescription glasses into sunglasses then tinted glasses are the best option. Know all about tinted glasses and suitable tint for you by clicking here  
Mirrored Lenses are special lenses that reduce glare by reflecting light away with reflective coating to make it like small mirror. To know more about mirrored lenses and shades of mirrored lenses click here

All tints of Mirror finish sunglasses are best. To choose it is better to know about them. learn more