What is poor color vision?

Published On: Jan 15 2014 05:13:54 PM EST   Updated On: Jan 30 2014 12:58:29 PM EST
Senior's eye

By Mayo Clinic News Network

Poor color vision is a reduced ability to distinguish between certain shades of color. Although many people use the term "colorblind" to refer to the reduced ability to discriminate between some colors, true colorblindness describes a total lack of color vision. The ability to see only shades of gray is rare.

Poor color vision is an inherited condition in most cases. Men are more likely to be born with poor color vision. Most people with poor color vision can't distinguish between certain shades of red and green. Less commonly, people with poor color vision can't distinguish between shades of blue and yellow. Certain eye diseases and some medications also can cause poor color vision.

Source: http://www.mayoclinic.org/diseases-conditions/poor-color-vision/basics/definition/CON-20022091