Xanthopsia refers to the predominance of yellow in vision due to a yellowing of the optic media of the eye. The most common cause is digoxin

Digoxin

Digoxin INN , also known as digitalis, is a purified cardiac glycoside and extracted from the foxglove plant, Digitalis lanata. Its corresponding aglycone is digoxigenin, and its acetyl derivative is acetyldigoxin...

 toxicity and the development of cataracts which can cause a yellow filtering effect.

It has been suggested that Digitalis

Digitalis

Digitalis is a genus of about 20 species of herbaceous perennials, shrubs, and biennials that are commonly called foxgloves. This genus was traditionally placed in the figwort family Scrophulariaceae, but recent reviews of phylogenetic research have placed it in the much enlarged family...

-derived digoxin, used to treat heart failure, induced xanthopsia responsible for the yellow tinting exhibited by many of Van Gogh's works. http://www.psych.ucalgary.ca/PACE/VA-Lab/AVDE-Website/VanGogh.html

External links

• Acquired Colour Vision Deficiencies —University of Calgary
  University of Calgary
  The University of Calgary is a public research university located in Calgary, Alberta, Canada. Founded in 1966 the U of C is composed of 14 faculties and more than 85 research institutes and centres.More than 25,000 undergraduate and 5,500 graduate students are currently...
  
  , Vision & Aging Lab