| Description | Directional `E' and `C' test. | Standard reading test. Music Bars and Tables | Contrast sensitivity is the ability of the visual system to detect large but faint targets. There are
some pathological conditions that reduce contrast sensitivity without impairing visual acuity,
and the test will help in the identification of | Rosenbaum card fits in the pocket (3.5 by 6.5") and shows point, Jaeger and distance equivalents from 20/800 to 20/20. Uses numbers, directional E’s and XO patterns. For use at 14" (35 mm). Includes full moon pupil gauge 2, 3, 4, 5, 6, 7, 8, 9 mm. | The Wormington NP Card is specially designed to be a corrected Rosenbaum card. The known inaccuracies of the older Rosenbaum card (as noted by Horton and Jones in 1997 and others) have been corrected. The "J" notations are not used because of the |