Patent ID: 7309125
Filing Date: 2007-12-18
Classification: A61B

Abstract:
1. An apparatus for detecting abnormalities in spatial perception of a person to be tested comprising: a first transparent screen located at a first distance from the eyes of said person when the head of said person is in a stationary state; a second screen selected from a transparent screen and an opaque screen located at a second distance from the eyes of said person when the head of said person is in a stationary state, said second distance being greater than said first distance; means for forming a first image visible to said person on said first screen; means for forming a second image visible to said person on said second screen through said first screen; tracking means for tracking movements of at least one eye pupil of said person when said person follows images reproduced on said first screen and said second screen with his/her head being in a stationary state; and means for detecting abnormalities in spatial perception upon analyzing the tracking movements of the at least one pupil.