Medical Definition astigmatism noun astig·ma·tism ə-ˈstig-mə-ˌtiz-əm 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 asti...
Define astigmatism. astigmatism synonyms, astigmatism pronunciation, astigmatism translation, English dictionary definition of astigmatism. astigmatism top: normal eye with light focusing on the retina bottom: astigmatic eye with light focusing in differ
The meaning of ASTIGMATISM is a defect of an optical system (such as a lens) causing rays from a point to fail to meet in a focal point resulting in a blurred and imperfect image.
Regular:Principal meridians are perpendicular (90 degrees apart). Irregular:Principal meridians are not perpendicular (sometimes caused by injuries and scarring of the cornea).Keratoconus, a long-term thinning of the cornea, and some forms of eye surgery also can cause irregular astigmatism. Treatment...
Medical Encyclopedia Related to Myopic astigmatism:hyperopic astigmatism a condition in which the eye is affected with myopia in one meridian only. See also:Myopic Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co. ...
If you wear glasses or contacts, you’ve likely heard the term astigmatism before. And, if you have astigmatism, you likely know how frustrating the condition can be and the limits it can present. Those limitations go beyond just being able to find comfortable glasses and contacts. It goes ...
Definition: transparent optical devices affecting the wavefront curvature of light More specific terms: ball lenses, microlenses, achromatic lenses, aspheric aspheric, cylindrical lenses, rod lenses, diffractive lenses, ocular lenses, scanning lenses, f–theta lenses, telecentric lenses, objective lenses,...
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Twitter Google Share on Facebook Thesaurus Medical Encyclopedia Related to lenticular astigmatism:corneal astigmatism Translations Spanish / Español Select a language: len·tic·u·lar a·stig·ma·tism n.astigmatismo lenticular, debido a un defecto en la curvatura del (lente) cristalino. ...
RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook (redirected fromhypermetropic astigmatism) Thesaurus Medical Encyclopedia Related to hypermetropic astigmatism:myopic astigmatism,regular astigmatism astigmatism top: normal eye with light focusing on the retina ...