• The degree of visual competence required of applicants for unrestricted driver's licenses in various states should be standardized. Facts are needed as to the benefits that may be anticipated from more consistent and more searching tests. Screening programs would yield a wealth of data. Drivers who have had several accidents should be especially studied. The optical properties of windshields and other details of automobile design that make for distortion, glare, and confusing reflections should be given immediate, critical study.
Guerry D. OPHTHALMOLOGICAL ASPECTS OF DRIVER LICENSING AND REPEAT OFFENSES. JAMA. 1957;163(4):227–228. doi:10.1001/jama.1957.02970390003002