Single and Multiple Stimulus Static Perimetry in Glaucoma ; The Two Phases of Perimetry : the Two Phases of Perimetry

does not vary more than 1 % over the whole surface. Stimulus: The luminance of the stimuli can be regulated by means of neutral density filters. These filters are neither entirely neutral nor completely uniform, but these variations are not significant for perimetry. The maximum luminance of the stimuli is standardized at 1000 asb (316 2 cd.m-). The standard GP for kinetic perimetry has 3 neutral density filters which reduce the luminance by 0.5, 1.0 and 1.5 log units respectively. The modification of the GP for static perimetry is supplied with an additional series of four neutral density filters, which allow luminance steps of 0.1, 0.2, 0.3 and 0.4 log units. The resulting luminance values, expressed in apostilb, are given in Table I. TABLE I Luminance values of the Goldmann perimeter 4 3 2 steps lux 1430 450 143 45 3,1 asb 1000 315 100 31,5 3,1 2 cd/m 315 100 31,5 10 3,1 ßL ±30 10 3 3,1 L log L asb 3 2,5 2 2 1,5 0,5 2 Background: 31,5 asb. = 10 cd/m • Coefficient of reflection 0,7. 1 2 (1 asb = -cd/m). Front Matter....Pages i-xii Introduction....Pages 1-2 Some Basic Facts from Visual Physiology....Pages 3-45 The Fundamental Principles of Static and Kinetic Perimetry....Pages 46-61 Choice of the Conditions of Examination....Pages 62-97 The Place of Static and Kinetic Perimetry in the Two Phases of Visual Field Examination....Pages 98-110 Three Instruments for Single Stimulus Visual Field Examination....Pages 111-124 Normal Values and Normal Variation of Threshold Measurements....Pages 125-157 Multiple Static Stimuli in the Detection Phase....Pages 158-202 Preretinal Factors....Pages 203-215 Description of Visual Field Defects....Pages 216-227 The Examination Procedure in Practice; Experiences with the Multiple Stimulus Method for the Detection of Glaucomatous Defects....Pages 228-311 Summary and Conclusion....Pages 312-323 Back Matter....Pages 325-356 The maximum luminance of the stimuli is standardized at 1000 asb (316 2 cd.m-). TABLE I Luminance values of the Goldmann perimeter 4 3 2 steps lux 1430 450 143 45 3,1 asb 1000 315 100 31,5 3,1 2 cd/m 315 100 31,5 10 3,1 ssL +/-30 10 3 3,1 L log L asb 3 2,5 2 2 1,5 0,5 2 Background: 31,5 asb.