Super 7 High Index design is a 1.67 High Index Single Vision lens style that is recommended for powers - 2.00 to -10.00 sphere and -2.00 cylinder. This material is stronger, lighter and has better optics. It has High Impact protection, fast consistent tinting with an extra tough two-sided scratch coating.

1.6 High Index Aspheric design is available in several lens styles and is recommended for powers ± 2.00 to a combined power of
+ 7.00 or - 12.00 for its clarity and cosmetically appealing look.

Polycarbonate (1.586 high index) is also available in most lens styles and is recommended for children's wear, safety and sportswear because of its strength and lightness. Combined power should not exceed + 6.00 or - 10.00 for optimum usage.

Midrange High Index (1.53 to 1.56) is available in all lens styles and is recommended for combined powers of + 6.00 or - 9.00 on the main benefits of the product is its ability to accept "Transitions™" properties.

Bristolite is a CR39 aspheric lens which we recommend for powers of + 7.00 to a combined power of + 11.00. It is available in single vision, FT28 and 7&28 trifocal only.

Polaroid is available in polycarbonate as well as CR39 and glass. Polaroid comes in several tints and may be ordered with scratch resistant coating. It is available in midrange high index and plastic photochromic.