Xanthopsia
Xanthopsia is a color vision deficiency in which there is a predominance of blue in vision due to a yellowing of the optical media of the eye. The most common causes are digoxins inhibitory action on the sodium pump, and the development of cataracts which can cause a yellow filtering effect.
It has been suggested that Van Gogh contracted Xanthopsia as a result of digoxin consumption. Digoxin is a medication derived from digitalis and used to treat various heart conditions. This theory claims Xanthopsia as the cause of the yellow tinting exhibited by many of his works.Xanthopsia is also a rare side-effect of jaundice, in which bilirubin may be deposited into the eye in sufficient quantity to produce a yellow tint to the vision.

See also
Cyanopsia

References
External links
Acquired Colour Vision Deficiencies —University of Calgary, Vision & Aging Lab