Patent ID: 7798646
Filing Date: 2010-09-21
Classification: A61B,G16H,G16Z,Y02A

Abstract:
1. An apparatus for psychophysical measurement of dark adaptation in a test eye of a subject, said apparatus comprising a. a system or an electronic system for generating a target stimulus of a desired spectrum and intensity; b. a display for displaying said target stimulus to said test eye at a desired location, said display being in communication with said system; c. an input device to permit said subject to input a reaction of said subject to said target stimulus; and d. a controller in communication with said system, said display, and said input device, said controller capable of controlling said system, and recording at least one of the following: the reaction of said subject to said target stimulus, a time of said reaction, an intensity of said target stimulus at the time of said reaction and a spectrum of said target stimulus at the time of said reaction, and determining at least one threshold measurement from said recording wherein the controller further comprises a noise reduction protocol and said at least one threshold measurement is subject to said noise reduction protocol.