Acuity

Acuity is the clarity or sharpness that a person can see an object. Acuity screening targets are used in the Keystone to measure different levels of acuity such as 20/20, 20/40, 20/100, etc. The lower the second number in the set, the better the applicant's acuity. The higher the second number in a set, the worse the applicants acuity.

Unrestricted License

Generally, the minimum vision for most drivers to qualify for an unrestricted license is an uncorrected acuity reading of 20/40 (both eyes together).

An applicant screened for a School Bus Endorsement or a Commercial Drivers License who is required to meet the 391 Federal Standards or drives for a Public Utilities Commission of Ohio (PUCO) regulated Company Must have visual acuity of at least 20/40 (Snellen) in each eye with or without corrective lenses.

The law requires better acuity and horizontal field levels for one eye vision than for two eye vision.

Vision Acuity Standards Defined in Ohio Administrative Code Section 4501:1-1-20

Binocular (vision in both eyes)
Acuity of or better than 20/200 in each eye with or without lenses.
Horizontal field must be at least 70 degrees temporal in each eye.

Monocular (vision in only one eye)
Applicant is totally blind in one eye or has a visual acuity in that eye of worse than 20/200.
Horizontal field must be at least 70 degrees temporal and 45 degrees nasal in the best eye.