Purpose: To measure sensitivities of cone and rod systems separately and easily, using the modified automated perimeter.
Methods: Visual field testing was performed in 114 eyes without eye disease, 1 eye with retinal pigmentosa and 1 eye with achromatopsia, using 500 and 650nm stimuli after 30 minutes of dark adaptation (500 and 650nm stimuli represent rod and cone systems).
Results: In the eyes without eye disease, the relative sensitivities at the fovea were lower than at the periphery with 500nm stimulus, and higher than at the periphery with 650nm stimulus. In 1 eye with retinal pigmentosa, the relative sensitivities decreased significantly at the periphery with both 500 and 650nm stimuli. In the eye with achromatopsia, the relative sensitivities increased with 500nm stimulus.
Conclusions: The testing time of this modified automated perimeter did not differ from that of a standard automated perimeter. This study indicates that the sensitivities of cone and rod system sensitivities can be measured separately and easily using this modified automated perimeter. These results could be useful for general clinical practice.
View full abstract