For testing at 4 meters (13 ft.)
Acuity range 25M to 2M (20/160, 6/48 to 20/10, 6/3 equiv.)
Two smaller groups 5M to 2M for repetitive testing (20/40, 6/12 to 20/10, 6/3 equiv.)
Test includes a soft-tipped pointer, recording forms (CAT. NO. 2514) and test instructions
Measures 23 X 35.5cm (9 X 14 in.)
CAT.NO. 914 Small Illuminator Cabinet is necessary with these low contrast charts
Traditional Sloan optotypes are recognizable
Testing contrast sensitivity in clinics is essential for recording and diagnosing patients' contrast vision. Contrast Vision Sensitivity testing helps in the detection of early symptoms of vision loss due to Parkinson's, Diabetes, Ocular Hypertension, Glaucoma, and forming Cataracts. Contrast testing is also useful for monitoring progress after laser surgeries such as LASIK or PRK.