amblyopia

amblyopia
n.
poor sight, not due to any detectable disease of the eyeball or visual system, known colloquially as lazy eye. In practice this strict definition is not always obeyed. For example, in toxic amblyopia, caused by tobacco, alcohol, certain other drugs, and vitamin deficiency, there is a disorder of the optic nerve. The commonest type is amblyopia ex anopsia, in which factors such as squint (see strabismus), cataract, and other abnormalities of the optics of the eye (see refraction) impair its normal use in early childhood by preventing the formation of a clear image on the retina. This in turn leads to a cortical visual impairment.

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  • Amblyopia — Classification and external resources ICD 10 H53.0 ICD 9 368.0 …   Wikipedia

  • amblyopia — (n.) 1706, weakening of the eyesight, medical Latin, from Gk. amblyopia dim sightedness, noun of action from amblys dulled, blunt + ops eye (see EYE (Cf. eye)). Related: Amblyopic …   Etymology dictionary

  • Amblyopia — Am bly*o pi*a, Amblyopy Am bly*o py, n. [Gr. ?; ? blunt, dim + ? eye: cf. F. amblyopie.] (Med.) Weakness of sight, without and opacity of the cornea, or of the interior of the eye; the first degree of amaurosis. [1913 Webster] …   The Collaborative International Dictionary of English

  • amblyopia — [am΄blē ō′pē ə] n. [ModL < Gr amblys, dull + OPIA] a loss in sharpness of vision, esp. when not traceable to any intrinsic eye disease amblyopic [am΄blēäp′ik, am΄blēō′pik] adj …   English World dictionary

  • Amblyopia — Impaired vision in an eye due to a disorder of the brain cells that control the vision in that eye, not usually due to a problem with the eye itself. Amblyopia is caused by lack of use of an eye when the brain favors the other eye. The eye is… …   Medical dictionary

  • amblyopia — amblyopic /am blee op ik/, adj. /am blee oh pee euh/, n. Ophthalm. dimness of sight, without apparent organic defect. [1700 10; < NL < Gk amblyopía, equiv. to amblý(s) dull + opia OPIA] * * * ▪ pathology       reduction in vision in one or both… …   Universalium

  • amblyopia — noun Etymology: New Latin, from Greek amblyōpia, from amblys blunt, dull + ōpia opia more at mollify Date: circa 1706 dimness of sight especially in one eye without apparent change in the eye structures called also lazy eye • amblyopic adjective …   New Collegiate Dictionary

  • Amblyopia — Klassifikation nach ICD 10 H53.0 Amblyopia ex anopsia …   Deutsch Wikipedia

  • amblyopia — am•bly•o•pi•a [[t]ˌæm bliˈoʊ pi ə[/t]] n. oph dimness of sight without apparent organic defect • Etymology: 1700–10; < NL < Gk amblyōpía=amblý(s) dull + ōpiā opia am bly•op′ic ˈɒp ɪk adj …   From formal English to slang

  • amblyopia and hallucinations —    Amblyopia is also known as lazy eye . The term comes from the Greek noun ambluopia, which means weakness of vision. It is used to denote an indistinct or poor vision, usually although not necessarily limited to one eye. The lifetime prevalence …   Dictionary of Hallucinations

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