title: Lens opacity: a population study.
abstract: Age-corrected normal values for the Opacity Lens Meter (OLM) 701 were established by measuring 1598 eyes of 799 healthy volunteers. This study revealed a remarkable age-relation for the normal values. The average readings of the OLM of the 30-year-old subjects were around 10 units whereas the average for the 65-year-olds was close to 20 units. The best fit of the opacity vs. age was a quadratic function. The interindividual variation was small in the young and quite large in the older population. The correlation between contralateral eyes was high (R = 0.93).
authors.affiliation: University Eye Clinic, Basel, Switzerland.
authors.forename: R
authors.initials: R
authors.lastname: De Natale
authors.forename: J
authors.initials: J
authors.lastname: Flammer
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D002386:Cataract / Q000503:physiopathology*; D002648:Child; D003710:Demography; D006801:Humans; D007908:Lens, Crystalline / Q000503:physiopathology*; D008027:Light; D008875:Middle Aged; D012016:Reference Values; D012542:Scattering, Radiation; D014787:Vision Tests / Q000295:instrumentation