The Aging Lens

Abstract

Failure of the aging lens to retain its accommodative and image-forming properties results in a natural condition called presbyopia, which is easily remedied by glasses or bifocals. When the lens loses its flawless transparency, however, blindness due to cataracts may develop. Cataracts account for about one-fifth of all blindness and may be nuclear (physiologic) or cortical (pathologic). The only recommended treatment for senile cataract is surgery. Serviceable vision is obtained in at least 90 per cent of cases.