Abstract: An apparatus for enabling a user having a visual handicap indicative of a condition designated as double vision to obtain substantially binocular vision comprises a first prism associated with the left eye of the user and having a base and a first prismatic deviation, a second prism having a base and a second prismatic deviation different from the first prismatic deviation, and a rotating assembly for rotating the prisms until a binocular vision field is viewable through the prisms by the user. The prismatic deviations are selected so that rotation of the prisms aligns them in a manner which permits the brain to fuse the respective images viewed by each eye into a single image, thereby providing a binocular image field. If desired, corrective lenses which accommodate the far or near distance prescriptions of the left and right eyes may mounted in alignment with the corresponding prisms.

Abstract: An apparatus for protecting the eyes of a dental or medical practitioner from exposure to ultraviolet radiation during the illumination of a surgical site or other area of interest includes first and second carrier lenses positioned within a suitable frame. The first carrier lens comprises first and second regions wherein the first region is adapted to transmit substantially all visible light incident thereon and wherein the second region is adapted to absorb or reflect all ultraviolet light incident thereon and at least some light incident thereon having a wavelength above 400 nm. At least a portion of the second carrier lens is also adapted to absorb or reflect both ultraviolet light and at a portion of light incident thereon having a wavelength above 400 nm.

Abstract: An adjustable telescope alignment apparatus employs a telescopic assembly which is secured about the periphery to a pivot ring. The telescopic assembly extends from the front and back surfaces of the pivot ring. The pivot ring is positioned within a inner peripheral channel of a collet member to form a ball and socket joint. The collet member has an outer threaded area which is engaged by a threaded locking ring which locking ring selectively compresses the collet member. By means of the ball and socket joint one can adjust and move the telescope assembly within a desired cone of rotation. The collet member is inserted within an aperture formed in a carrier lens held by a spectacle frame and is secured to the lens by means of a suitable adhesive as applied to an outer peripheral flange of the collet member.

Abstract: A magnifying assembly of the type employing a lens surrounded by a plastic or metal holding is placed in a light diffuser, which light diffuser is an annular member having an open top which is associated with a peripheral flange upon which the magnifying lens rests. The member has a bottom opening which is associated with an annular curved flange which is abraded so as to uniformly diffuse light over the surface of a document to be read whereby the area enclosed by the bottom opening of the annual member is uniformly illuminated by a light source.

Abstract: A telescope housing has a removable finger accommodating ring secured thereto. The ring is coupled to the housing by a post having left and right flanges with upstanding distal ends opposedly projecting from one end of the post to be inserted into an aperture located in a latch on the ring. In this manner, various telescope assemblies of different magnification can be accommodated by the use of the removable ring which also enables convenient storage.

Abstract: An adjustable telescope alignment apparatus employs a telescopic assembly which is secured about the periphery to a pivot ring. The telescopic assembly extends from the front and back surfaces of the pivot ring. The pivot ring is positioned within a inner peripheral channel of a collet member to form a ball and socket joint. The collet member has an outer threaded area which is engaged by a threaded locking ring which locking ring selectively compresses the collet member. By means of the ball and socket joint one can adjust and move the telescope assembly within a desired cone of rotation. The collet member is inserted within an aperture formed in a carrier lens held by a spectacle frame and is secured to the lens by means of a suitable adhesive as applied to an outer peripheral flange of the collet member.

Abstract: An apparatus and a method for assisting in the selection of corrective lenses includes a spectacle frame having at least one test mounting lens emplaced in the eyepiece of the frame. The test mounting lens has a horizontally elongated aperture for releasably and slideable receiving a telescope holder therein. The telescope holder releasably retains a telescope within it and rides in the slot for positioning the telescope in a position that allows a person being tested to see through the telescope.

Abstract: A magnifying assembly of the type employing a lens surrounded by a plastic or metal holding is placed in a light diffuser, which light diffuser is an annular member having an open top which is associated with a peripheral flange upon which the magnifying lens rests. The member has a bottom opening which is associated with an annular curved flange which is abraded so as to uniformly diffuse light over the surface of a document to be read whereby the area enclosed by the bottom opening of the annual member is uniformly illuminated by a light source.