Color vision test

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Color blindness tests

Eye test - color; Vision test - color; Ishihara color vision test

Normally, you will be able to distinguish all colors.

This test can determine the following color vision problems:

• Achromatopsia -- complete color blindness, seeing only shades of gray
• Deuteranopia -- difficulty telling the difference between red/purple and green/purple
• Protanopia -- difficulty telling the difference between blue/green and red/green
• Tritanopia -- difficulty telling the difference between yellow/green and blue/green

Problems in the optic nerve can show up as a loss of color intensity, although the test may be normal.

Review Date: 02/10/2011
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; and Franklin W. Lusby, MD, Ophthalmologist, Lusby Vision Institute, La Jolla, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

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