Move your mouse over the nerve pathways, and the lesion will be described.
If you click on the lesion, a description of the anatomical features associated with that lesion will be described in this window.
Pathologies associated with these lesions can be followed up by clicking on the various links within the text.

Other diagnostic tests.
Move the mouse on to the flashlight to pick it up, and then, (depending on position), click to produce either a flashlight beam or convergence target.
Clicking on the room switch will facilitate the dark room test.
NB. Do not click the mouse rapidly on & off as this may produce an incorrect response.