The definition of a blind person varies from state to state. One state defines a blind person as "a natural person who has no vision or whose vision with correcting glasses is so defective as to prevent the performance of ordinary activities for which eyesight is essential, or who has central visual acuity of 20/200 or less in the better eye with correcting glasses, or whose central visual acuity is more than 20/200 in the better eye with correcting glasses but whose peripheral field has contracted to such an extent that the widest diameter of the visual field subtends an angular distance no greater than 20 degrees."
A blind person is covered under the American with Disabilities Act, which prevents discrimination against such persons based upon their blindness and prohibits discrimination against individuals with disabilities in employment, housing, education, and access to public services. The ADA further requires that reasonable accommodation be made so as to provide individuals with disabilities equal opportunities.
Legally blind means that you are considered blind for the purposes of the relevant law. Definitions of legal blindness varies by entity, but the following is an example of the Nebraska Department of Education's regulations regarding legal blindness: