Difference between revisions of Cylinder
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Cylinder | '''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]]. | ||
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Revision as of 22:29, 2 September 2020
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.