Abstract: A method of self-examining the interior of the ocular globe by applying a light source to the outer surface of the lower eyelid, with the eye closed in order to permit the entrance of the light from said light source only through the thickness of said lower eyelid and without said light passing through the crystalline or other focusing element of the eye, whereby the inner structure of the eye is rendered visible to the patient. An apparatus for carrying out the method includes a light source housed in a casing having a transparent smooth cover adapted to be contacted under a slight pressure with the exterior surface of the lower eyelid, and a power source for the light source.

Abstract: An apparatus for the application of light energy comprises a light source, a housing for said light source, a reflector at the bottom of said housing and an optical grid having frustopyramidal square openings, arranged as a cover at the opposite open end of the housing. Optionally a light filter and a flexible chamber may be provided in the apparatus, said light filter being located between the light source and the optical grid, and said flexible chamber being provided at the open end of the housing, so as to permit the application of light of predetermined frequencies and a vacuum to the surface where said light is applied.The use of said apparatus in the application of light of several frequencies, causes certain stimulations and provides a new instrument for the treatment of certain cutaneous, muscular and nervous deficiencies. By means of the application of certain light frequencies, a germicidal action is also obtained.

Abstract: An optical grid for correcting optical defects in either natural or artificial lenses comprises two perpendicularly arranged series of dark and opaque bars integrally connected to each other in order to form an integral network, all of said bars having a triangular cross section with the base of the triangle facing said lens and the vertex away from said lens, so as to form square openings in said grid having their smaller areas facing said lens and their larger areas away from said lens, the ratio of said smaller areas to said larger areas being of from 1:36 to 1:2.25, preferably 1:4, said smaller area of each square opening being of from 0.04 to 4 mm.sup.2, preferably 1 mm.sup.2, and said bars being 1 mm wide.In order to provide more luminosity, the grid is externally coated with a mirror-type reflecting coating or two large rectangular windows are provided laterally and away from the line of vision of said lens.