Method and graphics for achieving optimal lens correction for subnormal vision due to impaired retinas and undeveloped defective focusing abilities

摘要

Patients suffering severe retinal damage and focusing impairment are examined in an area having actual or simulated outdoor illumination by viewing a large graphic having colored familiar objects, number and letters of graduated incremental sizes thereon with colored backgrounds either darker or lighter than the objects, numbers and letters involved which the patient points out to ascertain the patient's estimated optimal correction for distance vision. Based on said estimate, the patient is provided with a combination of a soft contact lens either between the estimated correction and a correction obtained by traditional testing methods using black letters against a white background in a darkened room, or the best correction obtained by the examination with the large graphic and a plurality of spectacle type lenses in incremental diopter corrections of two or three diopters for training purposes. The patient trains for a period of about four or more weeks indoors and outdoors whereby the soft contact lenses are worn and the patient views successively through different diopter lenses to improve focusing ability and perception and to arrive at a final optimal correction for soft contact lenses and further spectacle type lenses to be used for reading. During the training period the patient receives supportive therapy which provides detailed information on what the patient should expect and to overcome adverse reactions which may occur incident to the method.