| The CSV-1000CVA test face is used to evaluate both contrast sensitivity and low contrast acuity.
Three contrast levels (high, 25% and 12.5%) of LogMAR acuity (20/16 to 20/100) are presented on the test face as well as the two spatial frequencies of 6 and 12 cycles/degree.
This test is most widely used for cataract documentation because eye doctors can document cataract vision loss with both types of tests. When using the low contrast acuity portion of the test for evaluating cataract patients, the 12.5% contrast level is recommended. | 
