Medical dictionary. 2011.
Cataract — For other uses, see Cataract (disambiguation). Cataract Classification and external resources Magnified view of cataract in human eye, seen on examination with a slit lamp using diffuse illumination … Wikipedia
radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… … Universalium
Cataract — A clouding of the lens of the eye. The normally clear aspirin sized lens of the eye starts to become cloudy. The result is much like smearing grease over the lens of a camera. It impairs normal vision. There are many causes of cataracts including … Medical dictionary
cataract — n. any opacity in the lens of the eye that results in blurred vision. Cataracts may be congenital or acquired. The latter may be due to metabolic disease (such as diabetes), direct or indirect injury to the lens, or prolonged exposure of the eye… … The new mediacal dictionary
cataract — cataractal, cataractous, adj. cataracted, adj. /kat euh rakt /, n. 1. a descent of water over a steep surface; a waterfall, esp. one of considerable size. 2. any furious rush or downpour of water; deluge. 3. Ophthalm. a. an abnormality of the eye … Universalium
Non-ionizing radiation — Different types of electromagnetic radiation Non ionizing (or non ionising) radiation refers to any type of electromagnetic radiation that does not carry enough energy per quantum to ionize atoms or molecules that is, to completely remove an… … Wikipedia
electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… … Universalium
ionizing radiation injury — also called radiation sickness tissue destruction or changes caused by deeply penetrating electromagnetic waves of high frequency or subatomic particles (subatomic particle) that form positively and negatively charged particles in the… … Universalium
congenital cataract — 1. any of various usually bilateral opacities present at birth; they may be mild or severe and may or may not impair vision, depending upon their size, location, and density. Some have a hereditary, usually autosomal dominant cause; others result … Medical dictionary
heat cataract — posterior subcapsular opacity caused by chronic exposure to infrared radiation … Medical dictionary
