Different lenses have different properties. The density varies, known as index of refraction, and the ABBE VALUES are different for the various materials. The ABBE VALUE is a number given to describe the amount of chromatic aberration of an ophthalmic lens material. Here is a list of ABBE VALUES. The higher the number, the less…

FACT – UVA & UVB RAYS ARE HARMFUL More and more people are aware of the dangers caused by the sun. Your eyes, as well as your skin are at risk every time you step outside. You can reduce the risks of damaging your eyes by wearing sunglasses. What does ultraviolet (UV) mean? Ultraviolet is…