High precision visual field tester with unprecedented detailed results

摘要

A visual field testing apparatus for scanning the visual field of a human eye in great detail, precision, and clarity so as to detect the smallest blind area whereby allowing users the ability of early detection of glaucoma and other eye diseases of visual loss. The apparatus is small and inexpensive so that anyone can afford to purchase it and self-test without assistance so that the user can test frequently at home which further leads to early detection of eye diseases. Because of its great precision and detail in test results, the present invention is especially useful to doctors and researchers. One embodiment of the present invention is a visual field tester which comprises: (a) a recording surface having eye fixation means to fixate an eye's visual field relative to said recording surface; (b) a handheld scanning device which has a test mark for detecting very small blind areas in said eye's visual field and marking means for mapping said detected very small blind areas onto said recording surface; and (c) a head support for supporting a user's head.