astigmatism

astigmatism has 3 senses in the JumbleFix dictionary. Letters: 11.

Definitions

• n.. A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistinctness of vision.
• n.. (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
• n.. (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people