Ohio Rev. Code § 5109.15: Blind defined.

As used in sections 5109.15 to 5109.18, inclusive, of the Revised Code, "blind" means having either of the following limitations:

(A) Vision twenty/two hundred or less in the better eye with proper correction;

(B) Field defect in the better eye with proper correction which contracts the peripheral field so that the diameter of the visual field subtends an angle no greater than twenty degrees.