According to The World Health Organization, there are different classifications for low vision and legal blindness i.e.
- Mild vision loss or near-normal vision: 20/30 to 20/60
- Moderate visual impairment or low vision: 20/70 to 20/160
- Severe visual impairment or low vision: 20/200 or worse
- Profound visual impairment, or low vision: 20/500 to 20/1000
- Near-total visual impairment or low vision: Less than 20/1000
- Total visual impairment or blindness: No light perception