Medical Dictionary

astigmatism


astigmatism

noun astig·ma·tism \ə-ˈstig-mə-ˌtiz-əm\

Definition of ASTIGMATISM

1
:  a defect of an optical system (as a lens) causing rays from a point to fail to meet in a focal point resulting in a blurred and imperfect image
2
:  a defect of vision due to astigmatism of the refractive system of the eye and especially to corneal irregularity—compare emmetropia, myopia
February 28, 2015
pontificate Hear it
To speak pompously or dogmatically
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