[Automatic static quantitative perimetry of the central 30 degrees visual field in normal subjects]

131 normal volunteers (131 eyes) with visual acuities of 20/20 or better were tested by automatic static quantitative perimetry (Octopus-500E) for the central 30 degrees visual field. The results revealed that only 35 eyes (26.7%) had sensitivities at all points tested equal to or better than the age-corrected norms established for the device, and 96 eyes (73.3%) were 5 dB or more below the age adjusted norms at one point at least in areas not adjacent to the blind spot; the farther from the point of fixation, the sensitivity drop became more obvious and with higher frequency. When the central 30 degrees field was divided into five concentric circles, the greatest sensitivity drops appeared in the area between 25-30 degrees. The authors put forward more reasonable criteria for defects in the central 25 degrees visual field by Octopus-500 E Program 36.