[Natural course of senile cataract as observed by changes in visual acuity: a statistical study].
D000328:Adult; D000368:Aged; D002386:Cataract / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013223:Statistics as Topic; D014792:Visual Acuity