Medical Definition of aftercataract
: a clouding of the lens capsule (as from the deposit of fibrous matter or overgrowth of epithelial cells) that sometimes occurs following an operation for cataract removal Miotics reduced visual acuity markedly when aftercataracts left dense opacities in the center of the pupil.—Charles D. Phelps and Nour I. Arafat, Archives of Opthalmology, November 1977
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