title: The effect of lens opacity on the resolution visual field in normal subjects.
abstract: The sensitivity of the visual field declines with age. The density of the crystalline lens increases with age and may be partly responsible for the decline in sensitivity. To determine whether lens opacity influences the mean threshold of the visual field, 82 normal subjects were enrolled. All had their lens opacity measured with the Interzeag Lens Opacity Meter 701 and the visual field assessed with the Ring Resolution Perimeter. Lens opacity was highly correlated with age, while mean visual field threshold was also correlated with age but showed much greater variation. Multiple regression failed to show any influence of lens opacity measurements on the mean field threshold after age had been accounted for.
authors.affiliation: Department of Ophthalmology, University of British Colombia, Vancouver, Canada.
authors.forename: P H
authors.initials: PH
authors.lastname: House
authors.forename: M
authors.initials: M
authors.lastname: Schulzer
authors.forename: S M
authors.initials: SM
authors.lastname: Drance
authors.forename: G R
authors.initials: GR
authors.lastname: Douglas
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D002386:Cataract / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged; D011897:Random Allocation; D012684:Sensory Thresholds; D014794:Visual Fields / Q000502:physiology*