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Similarities between the visual fields of ocular hypertensive and normal eyes.

We tested 136 well-documented ocular hypertensive eyes with no visual field abnormalities on detailed manual perimetry using the C-30-2 program of the Humphrey Visual Field Analyzer. The results were compared with those of 274 age-matched normal eyes. No significant differences in threshold sensitivity were found between ocular hypertensive and normal eyes at any of the 76 points tested in the central 30 degrees. In the ocular hypertensive eyes, the presence of nerve fiber layer defects, especially diffuse atrophy, was associated with depressed threshold values. Threshold values were not associated with the size of the cup-disc ratio, level of intraocular pressure, or time since diagnosis of ocular hypertension.