An embodiment of the invention relates to vision testing apparatus comprising: a local display (9)； means (13) for obtaining data characterising the performance characteristics of said local display； means (9) for displaying to a user at said local display, a vision test that comprises an adaptation of a reference vision test； means (11) for registering user input in response to said displayed vision test； and means (9) for providing the user with the results of said displayed test； wherein said reference vision test comprises a test that is optimised for display on a high quality display, and the vision test for display at said local display is obtained by adapting said reference test in accordance with said characterising data so that the vision test displayed on said local display is a faithful reproduction of said reference test.
