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Method and arrangement for optically stimulating the visual system
 
   
Document Number
US Patent 7222964
Issued Date
May 29, 2007
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Abstract
A method and device for optically stimulating the visual system during static perimetry and for objectively evaluating adequate stimulus-related electrophysiological and/or magnetophysiological quantities. Light stimuli with defined parameters derived from a predetermined correlation function and from the known intensity dependence of the excitation response amplitude are presented to the observer. The excitation responses contained in the ERG and/or in the EEG/MEG are detected and processed. These excitation responses are used to determine and topographically evaluate the local sensitivity of the visual system. In one embodiment, the light sources are fixed inside a perimeter, and the excitation responses are amplified and digitized by a device, which preferably comprises an ERG/EEG measuring system and an A/D converter. To this end, the device, for the purpose of evaluating, and the light sources, for the purpose of controlling, are connected to a controlling means, preferably to a PC provided with evaluation and control software.
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Number of Claims:
14
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Owner
Published
May 29, 2007
Application Number
10/432,834
Filed
November 21, 2001
US Classification
351/242   351/246
Int'l Classification
A61B   3/02   (20060101)  
Examiner
Priority Data
Nov 22, 2000 [DE] 100 58 127 Aug 21, 2001 [DE] 101 40 871 Sep 20, 2001 [DE] 101 46 330
USPTO Field of Search
351/244   351/242   351/246   351/243   351/239   351/222  
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