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Article
January 1987

Optimal Rates of Movement for Kinetic Perimetry

Author Affiliations

From the Departments of Ophthalmology (Drs Johnson and Keltner), Neurology and Neurological Surgery (Dr Keltner), School of Medicine, University of California at Davis.

Arch Ophthalmol. 1987;105(1):73-75. doi:10.1001/archopht.1987.01060010079035
Abstract

• Duration, reliability, and sensitivity of kinetic thresholds were evaluated for the 1/4e, 1/ 2e, and 1/1e Goldmann-equivalent targets as a function of stimulus velocity (1° to 8°/s) using the SQUID automated perimeter. For all targets, the average duration of kinetic meridional scans decreased significantly as stimulus velocity increased from 1° to 4°/s. Minimal reductions in kinetic scan times were present for stimulus velocities above 4°/ s. All targets appeared to have reductions in sensitivity at velocities above 4°/s (target detection occurring at more central visual field locations) that were presumably related to the observers' reaction times. There were no consistent differences in the variability of kinetic thresholds for different stimulus velocities. When all factors were considered, a stimulus velocity of 4°/s seemed to be optimal for kinetic scans of all targets in the central and peripheral visual field.

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