North Carolina General Statutes Chapter 111. Aid to the Blind § 111-11. Definitions

(1) “Blind person” means a person who meets any of the following criteria:

a. Is totally blind.

b. Has central visual acuity that does not exceed 20/200 in the better eye with correcting lenses.

c. Has a visual field that subtends an angle no greater than 20 degrees at its widest diameter.

(2) “Visually impaired person” means a person whose vision with glasses is so limited as to prevent the performance of ordinary activity for which eyesight is essential.