The DVS-III, recognized as the industry standard, is designed for rapid, accurate evaluation of large groups of people. In addition, the headrest is equipped with a pressure switch to illuminate the test targets. The miniature peripheral vision test lamps are light-emitting diodes to ensure reliability and long life. They are positioned so that eyeglass frames will not interfere with testing. Tests targets are illuminated by reflected light, which is how the eyes see under actual driving conditions.
Tests advance automatically at the touch of a button.
Keystones supplies standard universal driver tests or will design special targets to meet individual customer requirements. A complete screening can be done in under three minutes. Little examiner orientation is required and all answers are displayed on the control faceplate. Integral test flexibility Keystone routinely supplies test targets to meet individual state requirements - or standard Keystone test may be substituted. Accurate and reliable Keystone tests, based on more than four decades of vision screening leadership, are scientifically correct and photographically precise.