a display means (12) arranged to be worn in proximity to a users eyes and arranged for displaying images relating to at least one visual function test to a user a first user interface (14) for providing instructions to a user relating to said at least one visual function test and a second user interface (16) for receiving responses from said user in relation to said at least one visual function test storage means (22) for storing data relating to said at least one visual function test control means (18) for transferring said data relating to said at least one visual function test to said display means and said user interface and output means for outputting a signal responsive to the user responses so as to assist with ophthalmic diagnosis. Fig.l
