de Alwis D V, Kon C H
Sussex Eye Hospital, Brighton, UK.
J Neurol. 1992 Oct;239(8):451-4. doi: 10.1007/BF00856810.
The Ishihara plates are widely used as a test for colour vision. Originally designed for the purpose of detecting congenital red-green colour blindness, the test also has some value in demonstrating acquired colour vision defects. There are, however, several disadvantages in the present arrangement of the plates. A modification of the test, involving the rearrangement of the order of the plates, is presented which, together with a new recording chart, simplifies both the administration and the interpretation of the test.
