THE EFFECT OF LENS OPACITY ON THE RESOLUTION VISUAL-FIELD IN NORMAL SUBJECTS

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 infl uences 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 Resolut ion Perimeter. Lens opacity was highly correlated with age. while mean visual field threshold was also correlated with age but showed much g reater variation. Multiple regression failed to show any influence of lens opacity measurements on the mean field threshold after age had be en accounted for.