| Color Blindness |
- 1 in 12 men
- 1 in 200 women
|
Inability or trouble telling the difference between colors. |
Genetic |
| Low Vision |
~7 million people in U.S. |
Worse than 20/70 visual acuity, but better than 20/200 visual acuity and cannot be corrected by standard eyeglasses, contact lenses, medication, or surgery. |
- Aging
- Diseases
- Genetics
- Injury
|
| Legal Blindness |
~1 million in U.S. |
Visual acuity of 20/200 or less in the better eye after correction, or a visual field restricted to 20 degrees or less. |
- Aging
- Diseases
- Genetics
- Injury
|
| Total Blindness |
~125,000 in U.S. |
A complete lack of light perception, must use alternative methods like Braille and auditory cues to access information. |
- Aging
- Diseases
- Genetics
- Injury
|