Can be wall-mounted.
Useful for preliterate or illiterate patients.
Includes two smaller sections for repetitive eyesight testing.
Tumbling E optotypes were developed in 1976 by Taylor. The Tumbling or Illiterate E optotypes are the closest optotypes to gratings. Also, Tumbling E tests have the best acuity thresholds and are one of the most reliable of the alternative visual acuity charts.