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( Arcus senilis)
Arcus senilis (or Arcus senilis corneae) is a white or gray opaque ring in the corneal margin (peripheral corneal opacity) present at birth or appearing later in life and becoming quite frequent in those over 50. It is also called A. adiposus, A. juvenilis (When it occurs in younger individuals), A. lipoides corneae, and A. senilis. It is most often found in the elderly, hence the name. It results from cholesterol deposits in or hyalinosis of the corneal stroma and may be associated with ocular defects or with familial hyperlipidemia.
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