Journal of the American Optometric Association · 1992
Rotary Diamond Chart--a new visual field screening device.
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Freed D M, Semes L P, Potter J W
Аннотация
The Rotary Diamond Chart (RDC) is presented as a new clinical method suitable for screening general optometry patients for visual field defects. A pilot study was conducted using both the rotary diamond chart and a central 76-point threshold-related screening test (Allergan-Humphrey) on 21 consecutive clinical patients. Full-threshold field testing was then completed on those subjects failing either screening test. The RDC detected five of six visual field defects including one very subtle defect which was not detected by the automated screening test. The sensitivity of the RDC visual field screening assessment was 83.33 percent with a specificity of 100 percent. These results suggest that the RDC is an effective clinical visual field screening test. It is easy for the clinician to use and for the patient to understand.