among the 92 car painters , with a mean age of 34.9 years ( range of 21 -- 64 years ; s.d . 10.4 years ) , two had been operated on for a cataract and 46 had lens changes , mainly nuclear sclerosis , clefts , lamellar separation , or cortical and subcortical opacities not affecting visual acuity .
C0086543
cataract
C0023317
lens