There are over a dozen test faces available to use with the CSV-1000. They are grouped into 5 categories:
The patented CSV-1000 standardization insures that testing light levels do not vary due to changes in line voltage or due to bulb aging. No other vision testing instrument offers this standardization package.
The VectorVision CSV-1000 is the most widely used test in the world for standardized contrast sensitivity, glare sensitivity and ETDRS testing.
VectorVision – World Leader in Standardized Vision Testing