Hyperacuity test to evaluate vision through dense cataracts; research preliminary to a clinical study. III. Data on normal subjects obtained with and without a pseudo-nuclear cataract 6/60 (20/200) at the Aravind Eye Hospital, Madurai, India.
Using a recently discussed three-point Vernier alignment test, data were obtained on normal subjects with and without a pseudo-nuclear cataract 6/60 (20/200) at the Aravind Eye Hospital, Madurai, India. This experiment is a critical control exercise. The pseudo-cataract caused measurably and predictably reduced Vernier alignment thresholds, there were no meaningful differences between eyes, and necessary modifications in protocol for a later clinical study were defined.
Singh
S
S
School of Optometry, University of California at Berkeley, USA.
Aravind
S
S
Hirose
H
H
Enoch
J M
JM
D000293:Adolescent; D000328:Adult; D002386:Cataract / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D012016:Reference Values; D014787:Vision Tests; D014792:Visual Acuity