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.

Abstract: A method for prescribing bifocal spectacles for a person having reduced visual acuity includes placing a trial frame on the face of said person in front of his eyes and measuring a far interpupillary distance when said person is viewing a distant object, placing corrective lenses in said frame until said person views said distant object with acuity, placing high plus lenses in said frame for each eye and moving said right and left trial frame sections towards each other while said person is viewing text at a nearer distance and until said person can read said text with binocular vision and then obtaining a near interpupillary distance from said frame and recording said far and near distances with said far prescription and said high plus diopter to employ said recorded data to fabricate bifocal spectacles for said person from said data. The resulting spectacles are also described.

Abstract: A telescope housing has a removable finger accommodating ring secured thereto. The ring is coupled to the housing by a V-shaped spring member which is inserted into a channel member located on the telescope housing. 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: A universally adjustable telescopic spectacle assembly for use with an implanted intraocular lens employs an objective lens which has positioned in front of the objective lens a cylindrical lens to provide cylindrical correction to the handicapped user. The telescopic assembly employs universal motion in that the assembly can be moved with respect to a spectacle frame so that one is able to shift the objective lens axis about a central point while further having the capability of moving the objective lens in a spiral motion away from or towards the eye of the user and further having means for providing a pivotal joint mechanism to permit maximum oblique adjustment of the entire telescopic assembly as related to the optical or central axis of the objective lens. In this manner any change in conditions of vision or a misalignment of the intraocular lens as inserted during surgery can be compensated for by the universal adjustable telescopic assembly as disclosed.

Abstract: There is disclosed a hand-held magnifying apparatus which employs a lens assembly housing. The housing has first and second magnifying lenses located therein whereby the lenses can be adjusted to obtain a variable focal length. The housing is terminated at one end in a cylindrical hooded section which has coupled thereto an angled power source accommodating section. The power source accommodating section includes a source of illumination and cylindrical condensing lenses which operate to condense the light pattern from the illumination source and to change the light pattern from an elliptical to a circular pattern to thereby uniformly illuminate the text or material to be viewed via the magnifying lens assembly.

Abstract: An automatic focusing system for a terrestrial telescope comprises a frame worn on the head of a person, a fixed frame part mounted to the frame in viewing relationship to an eye of the wearer, a movable lens part carrying a telescopic lens which is slidably movable along a telescopic axis relative to the fixed frame part, an engagement member fixed to the movable lens part, a pendulum sensor mounted to the frame for detecting a change in inclination angle of the head of the wearer, and a drive circuit and motor responsive to the sensor for moving the movable lens part to a lens position corresponding to the head inclination angle detected by the pendulum sensor.

Abstract: There is disclosed a system for improving the visual field of a handicapped person which utilizes a wide angle lens which is placed in front of an object such as a screen of a television set to be viewed. This operates in conjunction with a prism to provide a reduced image of a size which is compatible with the field of view that the handicapped person experiences due to the use of an optical aid necessary to enable the handicapped person to see with resolution. The system and method according to this invention serves to enable such a person to view a reduced image such as the image of a television screen which reduction is implemented to be of the size of the field of the optical aid that the person requires in order to see with any given resolution.

Abstract: There is disclosed a method and apparatus for providing spectacle correction on axis in a compound lens system. A lensometer having a lens stop assembly is used in conjunction with a collet fixture for positioning a lens and for aligning the lens in a compound lens system while employing the lensometer to enable optical alignment. The method operates by placing the lens in the fixture to firmly hold the lens and allowing the lens to protrude from the fixture. The fixture is then placed over the lens stop assembly of the lensometer and the compound lens system is then held against the lens as emplaced on the lens stop. By rotating the fixture, one can align the lenses on axis and determine the proper position of the lens in the compound system. The collet fixture which includes an inner tubular section having an open top and an open bottom. The tubular section is symmetrically disposed about an axis with the open top having a series of slots.

Abstract: This invention provides a method of obtaining increased efficiency in implementing a medical photograph by allowing the practitioner to utilize a slower speed film which has a high response to the color red and hues thereof. According to the techniques depicted herein, a flash or beam of light which is generated by means of an ignition tube or a flash bulb is directed through a condensing lens which lens directs the beam of light in a concentrated area thus allowing the practitioner to obtain a greater depth of focus with a higher f-stop. This thereby enables one to utilize a slower speed film which film inherently possesses a better response to the color red.