The Arden Grating Test of Visual Function

Abstract

In the absence of detectable pathol­ogy, the optometrist must ascertain why a reading of 6/6 Snellen is not achieved. A new, inexpensive and simple test has been developed for this purpose, useful even with illiter­ates. An explanation of the test, some of its applications and drawbacks, plus comparison with other, currently used tests is presented.