Glass Lenses
Provides good scratch resistance and can accommodate a wide range of prescriptions. Glass lenses used to be the only choice for corrective lenses. However, glass is heavy and can be uncomfortable to wear. It is also easier to break or crack.

High Index
For people with a higher prescription. High index produces a thinner, lighter, more attractive lens.

High Index Plastic
(JP)—Lighter and thinner than conventional plastic and glass. It is more impact resistant than glass, but less impact resistant than polycarbonate and conventional plastic.

Plastic Lenses
Plastic is the most widely used material for eyeglass lenses. It's lighter in weight than glass, but not as scratch resistant. Scratch-resistant coating is highly recommended for plastic lenses.

Polycarbonate Lenses
The strongest, safest, lightest, and thinnest lens material available. They are also the most impact-resistant lenses available today, and are commonly used for children's glasses, sports glasses, and safety glasses.

(JP)—The strongest, safest, lightest, and thinnest lens material available. It is more impact resistant than glass, conventional, or high index plastic lenses.

Scratch Resistant
(JP)—A coating that increases the lenses' durability. It is applied to the front and back of plastic, polycarbonate, and mirror-coated lenses.