Racial Difference of Blue-Sensitive Mechanism

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