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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