Color Perimetry.

Our present method of color perimetry is definitely not worth the effort envolved except in special circumstances. The most useful colors are red and blue, noting chromatic endpoints in conditions such as tobacco amblyopia, minute foveal lesions, optic nerve disease, and suprachiasmal and infrachiasmal lesions. Patients with disease of the temporal, parietal and occipital lobes cause defects in acquired knowledge. These patients will have impaired ability to identify colors. It may be that substituting colored for white test objects is simply a way of reducing the strength of the stimulus.