eye astigmatism

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• Eye surgery — Intervention Eye surgery in the Middle Ages. ICD 10 PCS 08 ICD 9 CM …   Wikipedia

• Astigmatism — A*stig ma*tism, n. [Gr. a priv. + ?, ?, a prick of a pointed instrument, a spot, fr. ? to prick: cf. F. astigmatisme.] (Med. & Opt.) A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a… …   The Collaborative International Dictionary of English

• astigmatism — ► NOUN ▪ a defect of the eye or a lens, resulting in distorted images. DERIVATIVES astigmatic adjective. ORIGIN from Greek stigma point …   English terms dictionary

• astigmatism — [ə stig′mə tiz΄əm] n. [< Gr a , without + stigma (gen. stigmatos) a mark, puncture (see STICK) + ISM] 1. an irregularity in the curvature of a lens, including the lens of the eye, so that light rays from an object do not meet in a single focal …   English World dictionary

• Astigmatism (eye) — DiseaseDisorder infobox Name = Astigmatism ICD10 = ICD10|H|52|2|h|49 ICD9 = ICD9|367.2 Astigmatism is an optical defect, whereby vision is blurred due to the inability of the optics of the eye to focus a point object into a sharp focused image on …   Wikipedia

• Astigmatism — An optical system with astigmatism is one where rays that propagate in two perpendicular planes have different foci. If an optical system with astigmatism is used to form an image of a cross, the vertical and horizontal lines will be in sharp… …   Wikipedia

• Astigmatism — A common form of visual impairment in which part of an image is blurred, due to an irregularity in the curvature of the front surface of the eye, the cornea. The curve of the cornea is shaped more like an American football or a rugby ball rather… …   Medical dictionary

• astigmatism — /euh stig meuh tiz euhm/, n. 1. Also called astigmia /euh stig mee euh/. Ophthalm. a refractive error of the eye in which parallel rays of light from an external source do not converge on a single focal point on the retina. 2. Optics. an… …   Universalium

• eye disease — Introduction  any of the diseases or disorders that affect the human eye (eye, human).       This article briefly describes the more common diseases of the eye and its associated structures, the methods used in examination and diagnosis, and the… …   Universalium

• Eye disease — This is a partial list of human eye diseases and disorders. The World Health Organization publishes a classification of known diseases and injuries called the International Statistical Classification of Diseases and Related Health Problems or ICD …   Wikipedia

• eye — eyeable, adj. eyelike, adj. eyer, n. /uy/, n., pl. eyes, (Archaic) eyen or eyne; v., eyed, eying or eyeing. n. 1. the organ of sight, in vertebrates typically one of a pair of spherical bodies contained in an orbit of the skull and in humans… …   Universalium