A method of improving the visual perception ability of a person by: displaying to the person in at least one evaluation sessions a plurality of images selected to test the visual perception ability of the person with respect to a visual defect, and to elicit responses from the person indicative of the level of the person's visual perception ability with respect thereto; and by utilizing the responses to select another plurality of images designed to treat the person with respect to a detected visual defect; applying training glasses with reduced refraction for the respective eye, and displaying to person another plurality of images in treatment sessions until the visual perception ability of the person has been improved.