[The influence of target blurring and simulated opacity of the ocular media on automated perimetric thresholds].
The influence of target blurring and simulated opacity of the ocular media on the sensitivity of the central visual field in quantitative static perimetry was studied using a SARGON program of the automated perimeter Octopus 201. Ten eyes of 10 normal subjects aged from 21 to 35 were examined with target sizes 1, 3, and 5; 4 spherical plus lenses of +1.0D, +2.0D, +3.0D, and +5.0D; 5 kinds of occlusion diffusers which corresponded to the visual acuities of 1.0, 0.8, 0.6, 0.4, and 0.1; and 4 neutral density filters of 0.1, 0.3, 0.6, and 1.0 log units. The studies suggested that there was little difference between the sensitivity for target size 1 and that for target size 3 in spite of slight blurring of the target and simulated opacity of the ocular media. We concluded that target size 1 was as useful as target size 3 in quantitative static perimetry.
Uyama
K
K
Department of Ophthalmology, Kinki University School of Medicine, Osaka-Sayama, Japan.
Matsumoto
C
C
Okuyama
S
S
Otori
T
T
D000328:Adult; D002386:Cataract / Q000503:physiopathology*; D006801:Humans; D007909:Lenses; D010775:Photic Stimulation / Q000379:methods; D012684:Sensory Thresholds; D058609:Visual Field Tests / Q000295:instrumentation / Q000379:methods; D014794:Visual Fields