Experimental Fundus Photo Perimeter and its Application

With a purpose of photographing both the fundus and the visual field with one single exposure under direct observation, we developed a photo-perimeter. Fundus camera with infra-red TV was so modified that you might photograph fundus after plotting visual field with a target in response to a subject through a monitor TV screen, and that the plot-marks might be superimposed on a same film, Polaroid or 35 mm size, simultaneously for recording. The measurable area is approximately 25 degree of the central area, and any of the factors such as background illumination, fixation target, luminance of the target (visual angle; 19’) can be easily controlled.