/ English Dictionary

ASTIGMATIC

Pronunciation (US):

(GB):

 I. (adjective) 

Sense 1

Meaning:

Of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images

Classified under:

Adjectives

Antonym:

anastigmatic (not astigmatic)

Derivation:

astigmatism ((optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point)

astigmatism ((ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people)

astigmia ((optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point)

astigmia ((ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people)

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