Optics
Aspheric optical surfaces intended to reduce the population average spherical aberration across all sphere, cylinder, and axis combinations.
Stabilization
Auto Align Design, a hybrid ballasting geometry that optimizes thickness from apex to base of the lens, with 1 guide mark in the lens perimeter at 6 o'clock as a reference for judging rotation.
Geometry
A smooth rounded profile, for movement over the conjunctival tissue.
Material
Balafilcon A, a copolymer of a silicone vinyl carbamate, N-vinyl-pyrrolidone, a siloxane crosslinker and a vinyl alanine wetting monomer.
Surface
Performa surface treatment, which transforms hydrophobic silicone to hydrophilic silicate.
Visibility tint
Blue, from up to 300 ppm of Reactive Blue Dye 246.
Note
The clinical results published for this lens were obtained with the PureVision contact lens, which has the same lens material but a different lens design.
