Most acuity vision charts have the patient identify single letters in a line. Continuous text chart are designed to simulate everyday reading tasks for patients by using actual sentences. These sentences are calibrated to have a specific number of letters and spaces to create an equal test.
- For testing at 1 meter (40 in.)
- Chart contains SLOAN letters in LogMAR increments. Optotypes range in size from 50M to 5M on the main chart and from 6M to 1M on the inside chart
- When used at 1 meter, the main chart covers the entire Low Vision range from 1/1(20/1000, 0.02) to 1/5(20/100, 0.2 and extends to 1/1 (20/20, 1.0) on the inside chart
- A cord with an occluder is attached to accurately maintain the 1-meter testing distance
- The back of the card contains proportionally spaced reading segments from 4M to 0.6M in Times Roman font. From 3M on, two sets are provided to avoid memorization
- Each line contains the same number of letters and spaces
- Diopter ruler and instructions are included.
- Measures 54.5 X 40.5cm (21.5 X 16 in.)
- Folds to 27.25 X 40.5cm (10.75 X 16 in.)