Open main menu

Cylinder

Revision as of 22:29, 2 September 2020 by Dlskidmore (talk | contribs) (more details)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Cylinder lenses correct for the most common kind of astigmatism. It's represented as CYL on prescriptions. The lens is shaped like a cylinder rather than a sphere, bending light in one direction, but not in the other. The direction is specified by the Axis.

References