Meaning of astigmatism
Pronunciation: (u-stig'mu-tiz"um), [key]
- Also calleda refractive error of the eye in which parallel rays of light from an external source do not converge on a single focal point on the retina.
- an aberration of a lens or other optical system in which the image of a point is spread out along the axis of the system.
- astigmatism (Thesaurus)