senile cataract

senile cataract
senile cataract n a cataract of a type that occurs in the aged and is characterized by an initial opacity in the lens, subsequent swelling of the lens, and final shrinkage with complete loss of transparency

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the most common kind of cataract, painless and of unknown cause, developing without any traumatic, ocular, systemic, or congenital disorder. Senile cataracts are associated solely with aging, some degree of cataract being normal in persons over 50. Most form in the cortical area of the lens, but some form in the nuclear area and a few in the subcapsular area.

Medical dictionary. 2011.

Look at other dictionaries:

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  • senile nuclear sclerotic cataract — an increasing hardening of the nucleus of the lens, with the opacity appearing brown or black and the lens becoming inelastic and unable to accommodate; the opacity is usually bilateral, begins between ages 50 and 60, and progresses slowly …   Medical dictionary

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  • brown cataract — brunescent cataract a senile cataract in which the opacity is brown …   Medical dictionary

  • cortical cataract — 1. developmental punctate opacity, white or light blue in color, commonly found in the cortex of the lens; this is present in most lenses and there are multiple ones as a person ages, but they rarely affect vision. 2. the most common type of… …   Medical dictionary

  • presenile cataract — a subcapsular senile cataract in a person under 40 …   Medical dictionary

  • age-related cataract — senile c …   Medical dictionary

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