Table of Contents
- Overview
- Results
- Risks
- Prevention
- Images
Eye test - color; Vision test - color; Ishihara color vision test
Normal Values
Normally, you will be able to distinguish all colors.
What abnormal results mean
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.
Images
Color blindness tests
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Color vision test Risks
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)
