irregular astigmatism

неправильный астигматизм

Англо-русский офтальмологический словарь. 2010.

Смотреть что такое "irregular astigmatism" в других словарях:

  • irregular astigmatism — astigmatism in which the curvature in different parts of the same meridian of the eye varies or in which successive meridians differ irregularly in refraction, the image produced being an irregular area …   Medical 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 — /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

  • 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 — Ametropia Am e*tro pi*a, n. [Gr. ? irregular + ?, ?, eye.] (Med.) a visual impairment resulting from faulty refraction of light rays in the eye. Subtypes include {myopia} {astigmatism} and {hyperopia}. {Am e*trop ic}, a. [1913 Webster +PJC] …   The Collaborative International Dictionary of English

  • astigmatism — [[t]əstɪ̱gmətɪzəm[/t]] N UNCOUNT If someone has astigmatism, the front of their eye has a slightly irregular shape, so they cannot see properly …   English dictionary

  • astigmatism — n. a defect of vision in which the image of an object is distorted, usually in either the vertical or the horizontal axis, because not all the light rays come to a focus on the retina. Some parts of the object may be in focus but light from other …   The new mediacal dictionary

  • astigmatismo irregular — Eng. Irregular astigmatism Astigmatismo en el cual no es constante su curvatura en uno o más meridianos o en el cual meridianos sucesivos difieren de manera irregular en la refracción ocular. Suele ser debido a irregularidades corneales como… …   Diccionario de oftalmología

  • Keratoconus — Classification and external resources The conical cornea that is characteristic of keratoconus ICD 10 H …   Wikipedia

  • Dan Reinstein — Professor Dan Reinstein is a specialist ophthalmic surgeon in the UK and is a board certified ophthalmologist in the USA and Canada, specializing in the field of refractive surgery (vision correction). He is medical director of the London Vision… …   Wikipedia

  • Corrective lens — A bifocal corrective eyeglass lens A pair of contact le …   Wikipedia


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