Distance eye test for visual acuity screening at 20 Feet
Visual Acuity range 20/100 to 20/16
Includes red green bars for color vision screening
Eye chart measures 23 X 35.5 cm (9 X 14 in.)
Tumbling "E" suitable for illiterate and preliterate patients
Useful for multiple languages
Tumbling or Illiterate "E" charts are very reliable alternative visual acuity tests. Although Landolt "C" tests are considered the standard in alternative vision tests, many studies have proven that Tumbling "E" tests are nearly equal. In fact, because of their shape, Tumbling "E"s have grating properties and have been proven to be almost better then Landolt "C"s in visual acuity establishment.