Legal blindness

A level of visual impairment defined in many jurisdictions as visual acuity of 20/200 or worse in the better eye with best correction, or a visual field of 20 degrees or less. Legal blindness is an administrative threshold used to determine eligibility for disability benefits and services, but it does not imply total blindness — the majority of people who are legally blind retain some usable vision. The distinction between legal blindness and total blindness is important for accessibility design, as solutions should accommodate the full spectrum of visual ability.