Includes red green bars for color vision screening.
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 Es have grating properties and have been proven to be almost better then Landolt Cs in visual acuity establishment.