Reflection of light by small areas of the ocular fundus

Light reflected from 50 micrometer spots on the fundi of two rhesus monkeys and three human volunteers was measured as a function of wavelength in 10 nm. jumps from 400 to 900 nm. The areas measured were a retinal artery and vein, areas of the disk, macula, and retina devoid of visible blood vessels, and the fovea.