Show pagesourceExport to PDFBack to top How to Test Vision with an Iowa Driver's License Hold the license 16 inches from the eyes Use best correction: bifocals or reading glasses Snellen Equivalents: IOWA- 20/160 Name and Address - 20/50 Small serial number - 20/32 Developed by: Brian R. Kirshling, OD Erin M. Shriver, MD Mark E. Wilkinson, OD tests tests
