|astigmatism or astigmia (əˈstɪɡməˌtɪzəm, əˈstɪɡmɪə)|
|1.||a defect of a lens resulting in the formation of distorted images; caused by the curvature of the lens being different in different planes|
|2.||faulty vision resulting from defective curvature of the cornea or lens of the eye|
|astigmia or astigmia|
|a gadget; dingus; thingumbob.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
astigmatism a·stig·ma·tism (ə-stĭg'mə-tĭz'əm)
A condition in which unequal curvatures along the different meridians in one or more of the refractive surfaces of the eye cause the rays from a light source not to be focused at a single point on the retina. Also called astigmia.
|astigmatism (ə-stĭg'mə-tĭz'əm) Pronunciation Key
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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 a single point on the retina, resulting in blurred vision.