The CSV-l000LV is designed for evaluating patients who have worse than 20/70 acuity. At a test distance of 1 Meter, the letter size is equivalent to 20/630 ETDRS LogMAR acuity. This test presents letters at 8 contrast levels.
The unique design of the CSV-l000LV matches the visual capability of low vision patients and provides for a more sensitive and reliable test.
The CSV-l000LV improves the office efficiency for evaluating low vision patients. The test is very fast because of the specific contrast levels chosen for the test and because row isolation eliminates the fixation problems encountered with other tests.
No special lighting or lighting calibration is required for the examination. Further, when needed, the test can easily be moved closer to the patient without adjusting the lighting.
The CSV-1000LV can also be used to test patients who have good acuity (better than 20/70). For these patients, the test distance should be 3 meters.