astigmatic

a·stig·ma·tism  (-stgm-tzm)

n.

A visual defect in which the unequal curvature of one or more refractive surfaces of the eye, usually the cornea, prevents light rays from focusing clearly at one point on the retina, resulting in blurred vision.

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[a- + Greek stigma, stigmat-, point (from stizein, stig-, to tattoo; see steig- in Indo-European roots).]

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astig·matic (stg-mtk) adj. & n.

astig·mati·cal·ly adv.

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astigmatic

Adjective

relating to or affected with astigmatism [Greek a- without + stigma spot, focus]

Thesaurus

Adj.

1.

astigmatic - 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 anastigmatic, stigmatic - not astigmatic