Contact Lenses & Care

Next-Generation Aberration Correction

Spherical Aberration is Inherent Within The Ocular System

In the general population, 0.15 microns of positive spherical aberration is typical for a 6.0mm pupil.*

0.15 microns of positive aberration in a typical eye
0.00 microns of spherical aberration in an ideal eye

Standard Spherical vs. Enhanced Aspheric Optics

Standard spherical contact lenses induce spherical aberration.

  • Spherical aberration is not consistent across lens powers.
  • Negative spherical aberration increases as power is increased to correct myopia.

PureVision® silicone hydrogel lenses control spherical aberration.

  • PureVision lenses are designed with an aspheric anterior surface to reduce both inherent and induced spherical aberrations.
  • The enhanced optical design within PureVision® lenses reduces spherical aberration across all lens powers.

*Thibos LN, et al. J Opt Soc Am A 2002. 19:2329-2348