[Specificity of suprathreshold computer perimetry].

Abstract

The problems encountered in linear suprathreshold computer perimetry are discussed in the light of results with the Fieldmaster 200 automatic perimeter utilizing different test conditions. A linear supraluminosity of the test points, especially in the central visual field, results in poor specificity of the periphery of the tested area if no substantial loss of sensitivity is acceptable. Taking the three-dimensional distribution of retinal thresholds into account, the supraluminosity of the perimetric stimuli should be adapted to the eccentricity of testing.