A system for detecting an eye disease in an individual, the system comprising: a projecting unit (115, 600, 112) for projecting test patterns and fixation targets on the retina of an eye of said individual; at least one input device (125, 666, 606, 610) for providing input representing a difference observed by said individual between a perceived image of one of said test patterns and a predetermined reference pattern; a competing sensory stimuli generating unit (662, 664, 660) for controllably subjecting said individual to competing sensory stimuli; and at least one processing unit (110, 135, 604, 664) operatively coupled to said projecting unit, said at least one input device, and said competing sensory stimuli generating unit, said at least one processing unit is configured to perform the steps of, fixating the individual's vision at or about a fixation target projected at a first location of said retina, projecting for a selected duration a test pattern at a second location of said retina, to allow said individual to form a perceived image of said test pattern, receiving from said individual input indicative of a difference in at least one localized part of the perceived image of said step of projecting as compared to a predefined reference pattern, if said individual detected said difference, and repeating said steps of fixating, projecting and receiving a number of times to obtain a plurality of data, wherein in at least some of the repetitions of said steps of fixating, projecting and receiving, the individual is subjected to a competing sensory stimulus, wherein the individual is presented with test patterns having artificially introduced distortions of various sizes, or amplitudes, or magnitudes which are presented to the individual such that they fall on a lesioned retinal region, wherein the response of the individual is recorded and analyzed to assess the severity of the individual's lesion or to classify the individual as belonging to a particular class of clinically defined disease progression state. a projecting unit (115, 600, 112) for projecting test patterns and fixation targets on the retina of an eye of said individual; at least one input device (125, 666, 606, 610) for providing input representing a difference observed by said individual between a perceived image of one of said test patterns and a predetermined reference pattern; a competing sensory stimuli generating unit (662, 664, 660) for controllably subjecting said individual to competing sensory stimuli; and at least one processing unit (110, 135, 604, 664) operatively coupled to said projecting unit, said at least one input device, and said competing sensory stimuli generating unit, said at least one processing unit is configured to perform the steps of, fixating the individual's vision at or about a fixation target projected at a first location of said retina, projecting for a selected duration a test pattern at a second location of said retina, to allow said individual to form a perceived image of said test pattern, receiving from said individual input indicative of a difference in at least one localized part of the perceived image of said step of projecting as compared to a predefined reference pattern, if said individual detected said difference, and repeating said steps of fixating, projecting and receiving a number of times to obtain a plurality of data, wherein in at least some of the repetitions of said steps of fixating, projecting and receiving, the individual is subjected to a competing sensory stimulus, wherein the individual is presented with test patterns having artificially introduced distortions of various sizes, or amplitudes, or magnitudes which are presented to the individual such that they fall on a lesioned retinal region, wherein the response of the individual is recorded and analyzed to assess the severity of the individual's lesion or to classify the individual as belonging to a particular class of clinically defined disease progression state. fixating the individual's vision at or about a fixation target projected at a first location of said retina, projecting for a selected duration a test pattern at a second location of said retina, to allow said individual to form a perceived image of said test pattern, receiving from said individual input indicative of a difference in at least one localized part of the perceived image of said step of projecting as compared to a predefined reference pattern, if said individual detected said difference, and repeating said steps of fixating, projecting and receiving a number of times to obtain a plurality of data, wherein in at least some of the repetitions of said steps of fixating, projecting and receiving, the individual is subjected to a competing sensory stimulus, wherein the individual is presented with test patterns having artificially introduced distortions of various sizes, or amplitudes, or magnitudes which are presented to the individual such that they fall on a lesioned retinal region, wherein the response of the individual is recorded and analyzed to assess the severity of the individual's lesion or to classify the individual as belonging to a particular class of clinically defined disease progression state.