|VISUAL ACUITY: A person who has sufficient visual acuity should see the number twelve in the circle on the left whether or not they have normal color vision. I||COLOR BLINDNESS: A person with normal color vision sees a number seven in the circle on the left. Those who are color blind usually do not see any number at all.|
|RED-GREEN COLORBLINDNESS: People with red-green color blindness see either a three or nothing at all. Those with normal color vision see an 8.||PROTANOPIA & DEUTERANOPIA
Those with normal vision see the number thirty-five in the circle above. A person with protanopia sees only he number five. A person with deuteranopia sees the number three. People who are partially color blind will see both numbers but one more distinctly than the other.