The lens is removed, along with any remaining lens material.

The Costa 400 is offered in all three lens materials, and it eliminates glare at the 400 nanometer mark.

The magnetic interaction in lens material is essentially nil.

A good high-refraction replacement for calcium fluoride as a lens material can be a fluorophosphate glass.

This was done to prevent the inflammatory response to leftover lens material.

She tapped a little harder the second time and Dr. Blue's lens material began to move around.

Some plastic lens materials, such as polycarbonate, inherently block most UV.

There are lens materials with lower density at higher index which can result in a truly lighter lens.

Choose as high a refractive index for the lens material as cost permits.

Density: 1.1 g/cm3 (the lightest corrective lens material in common use)