Method for detecting color vision deficiencies of a subject by determining his or her spectral sensitivity curve, wherein the spectral sensitivity curve is determined by critical fusion frequency spectral scanning at predetermined discrete narrow bands of wavelengths, preferably being blue, green, orange...http://www.google.de/patents/US6280032?utm_source=gb-gplus-sharePatent US6280032 - System for detecting and correcting color vision deficiencies based on critical fusion frequency spectral scanning
