Apparatus for quantifying visual function defects comprises a plurality of testing elements (1) having a surface (3) provided with a selected visual stimulus (5) and with a machine readable code (6) for uniquely identifying the stimulus (5). The apparatus further comprises a light pen (12) for reading the code (6) on each element (1) and a microprocessor (20) for analysing the codes (6) read by the light pen (12) in order to quantify the visual function defect.
申请公布号
US4988186(A)
申请公布日期
1991.01.29
申请号
US19880223239
申请日期
1988.07.25
申请人
HILL, ADRIAN R.;BURGESS, ARTHUR E.;REEVES, BARNABY C.
发明人
HILL, ADRIAN R.;BURGESS, ARTHUR E.;REEVES, BARNABY C.