Logarithmic chart uses traditional Sloan optotypes. These calibrated optotypes blur at threshold and adhere to the Snellen 5x5 grid. Sloan chart uses two smaller groups for repetitive testing and minimizes memorization. Logarithmic Sloan acuity test is a great screener for literate adults and children.
- Notations for testing at 3 meters (10 ft.)
- Acuity range 24M to 1.5M (20/160, 6/48 to 20/10, 6/3 equiv.)
- Two smaller groups 6M to 1.5M for repetitive testing (20/40, 6/12 to 20/10, 6/3 equiv.)
- Measures 23 X 35.5 cm (9 X 14 in.)
- Fits Small Illuminator Cabinet CAT. NO. 914
- Can be wall-mounted
- Includes LogMar and Letter sizes on chart
- Equivalents for 20 feet