The Arden gratings in optometric practice.
The use of the Arden gratings (AO contrast sensitivity system) in optometric practice is evaluated. A total of 320 patients presenting for eye examination were screened with the gratings. Sixty-four eyes (10%) gave abnormal grating scores although results from conventional examination techniques revealed no abnormality. Of the 110 abnormal eyes detected by routine examination techniques, 8 presented with normal grating scores, 6 with "borderline suspect" scores and 96 with abnormal scores. Used in isolation, the failure rate of the Arden gratings to detect ocular abnormality in the patient population was 1.3% and the "false positive" referral rate was 10%.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000550:Amblyopia / Q000503:physiopathology; D002386:Cataract / Q000503:physiopathology; D002648:Child; D005556:Form Perception / Q000502:physiology*; D005901:Glaucoma / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D009896:Optic Atrophy / Q000503:physiopathology; D009907:Optometry / Q000295:instrumentation*; D010364:Pattern Recognition, Visual / Q000502:physiology*; D012164:Retinal Diseases / Q000503:physiopathology