What is Blind?

Legal Definition
One who is deprived of the faculty of seeing.

2. Persons who are blind may enter into contracts and make wills like others. Carth. 53; Barn. 19, 23; 3 Leigh, R. 32. When an attesting witness becomes blind, his handwriting may be proved as if he were dead. 1 Stark. Ev. 341. But before proving his handwriting the witness must be produced, if within the jurisdiction of the court, and examined. Ld. Raym. 734; 1 M. & Rob. 258; 2 M. & Rob. 262.
-- Bouviers Law Dictionary
Legal Definition
One who is deprived of the sense or faculty of sight. See Pol. Code Cal. 1903, ยง 2241.
-- Black's Law Dictionary