| Description | 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 | Standard reading test. "walked regularly..." | Directional `E' and `C' test. | This two sided contemporary reading card was designed by James Lebensohn, MD and provides a full range of near point exercises including words, numbers and OX symbols. Optotypes include 20/80, 20/400, 20/260, 20/200, 20/100, 20/65, 20/50, 20/40, 20/ | 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. |