A color vision test, also known as the Ishihara color test, measures your ability to tell the difference among colors. If you don't pass this test, you may have poor color vision, or may be told you that you're color blind.
The most common type of poor color vision is an inability to distinguish shades of green from red. Poor color vision can be caused by:
Certain diseases can cause color vision impairment, including:
You may want to have a color vision test if you think your color vision is deficient. If your child is receiving a standard eye exam, it’s a good idea to have them tested for both color vision and visual acuity. This can help address any potential problems early.