THE MARS PERCEPTRIX CORPORATION

The choice of eye care professionals, occupational testers, and clinical researchers around the globe, for accurate, convenient and rapidly-administered contrast sensitivity measurements... Unlike other contrast tests that assess visual acuity using low contrast targets, the Mars tests are true contrast sensitivity tests that assess the lowest contrasts your patients can perceive, rather than the smallest letters they can identify at some low, arbitrarily chosen contrast. With the Mars tests, it is the contrast, and not the letter (or numeral) size, which diminishes from the beginning to the end of the chart... Identifying functional losses in low contrast perception associated with optical and neural deficits

Also known as: Mars Perceptrix

Primary location: Chappaqua United States