Notations for vision testing at 10 ft.
Visual acuity range 10/50 to 10/8 (20/100 to 20/16 equiv.)
Eye chart measures 23 X 35.5 cm (9 X 14 in.)
Fits small Illuminator Cabinet CAT. NO. 914
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.
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