Abstract

Acquired loss of color vision is associated with diseases which produce vascular complications that affect the eye.^1,2 In particular, the early loss of color vision associated with diabetes mellitus initially influences the blue-sensitive mechanism. Generally, as the disease progresses, loss of green vision becomes evident, and finally, red vision is involved.³ The patho-physiological mechanisms which produce the visual loss appear to be related to optical and neural changes within the eye.^4,5 The optical loss may be caused by light scattering produced by plasma proteins which leak into the retina through an altered blood-retinal barrier.^4,5

© 1992 Optical Society of America