Vision Tests

Color Vision Tests

What Affects the Test

Factors that can interfere with your test or the accuracy of the results include:

• Your ability to understand or follow instructions. Some vision tests cannot be done on babies, small children, or people who cannot understand or follow the instructions.
• Your ability to stay alert and respond to questions.
• Failure to wear prescribed eyeglasses or contact lenses.
• Poor lighting.

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Author:	Alison Allen	Last Updated: August 16, 2007
Medical Review:	Patrice Burgess, MD - Family Medicine Ian MacDonald, MDCM, FRCSC - Ophthalmology Andrew Swan, MD, CCFP, FCFP - Family Medicine
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