Abstract: The present disclosure relates to a gradient index progressive addition spectacle lens that provides improved optical performance and a wide visual field. The lens comprises a plurality of axially layered lens sections at least one of which has a refractive index gradient oriented transverse to a meridian of the lens that functions as a progressive intermediate vision zone between viewing portions of different refractive index that provide the refractive powers for corresponding vision portions of the lens. The other layer(s) of the lens incorporates a generally constant or similarly changing refractive index.

Abstract: A diagnostic and therapeutic contact lens is provided for use with the slit lamp or other biomicroscope for the examination and treatment of the structures of the eye including that of the fundus and anterior chamber. The lens comprises a contacting portion adapted for placement on the cornea of an examined eye, two reflecting surfaces and a refracting portion. Light rays emanating from structures within the eye pass through the cornea and contacting portion of the lens and first reflect from the anterior reflecting surface as a positive reflection in a posterior direction. Following the first reflection the light rays reflect as a positive reflection in an anterior direction from the posterior reflecting surface to a refracting portion through which the light rays exit the lens.

Abstract: The present invention relates to a gradient index progressive addition spectacle lens that provides improved optical performance and a wide visual field. The lens comprises a plurality of axially layered and bonded lens sections of continuous curvature at least one of which has a refractive index gradient oriented transverse to a meridian of the lens that functions as a progressive intermediate vision zone between viewing portions of different refractive index that provide the refractive powers for corresponding vision portions of the lens. The other layer(s) of the lens incorporates a generally constant or similarly changing refractive index.

Abstract: The lens of the present invention relates to multifocal spectacle lenses, including bifocal and trifocal lenses, with improved cosmetic appearance, optical performance and wide visual field. The lens comprises a plurality of axially layered and bonded lens sections of continuous curvature at least one of which has a changing refractive index incorporating a refractive index blend area oriented transverse to a meridian of the lens. The blend eliminates visibility of the joining area of adjacent portions of generally constant refractive index and the abrupt magnification shift and image jump typical of segmented multifocal lenses. The areas of generally constant refractive index provide the refractive powers for corresponding discrete vision portions of the lens. The other layer(s) of the lens incorporates a constant or similarly changing refractive index.

Abstract: An inverted real image forming opthalmoscopic contact lens provides for viewing and treating structures within an eye. The lens comprises a contacting surface adapted for placement on the cornea of the eye, a concave annular anterior reflecting surface, a convex annular posterior reflecting surface, and two non-reflective portions. A first non-reflective portion is positioned along the lens axis and proximate to the convex annular posterior reflecting surface. A second non-reflective portion is positioned along the lens axis and proximate to the concave annular anterior reflecting surface. A light beam emanating from the structure of the eye enters the lens and contributes to the formation of an inverted real image of the structure through an ordered sequence of reflections of the light beam, first in a posterior direction from the anterior concave reflecting surface and next as a negative reflection in an anterior direction from the convex posterior reflecting surface.

Abstract: A diagnostic and therapeutic contact lens is provided for use with biomicroscopes for the examination and treatment of structures of the eye. The lens comprises a contacting surface adapted for placement on the cornea of an eye, two reflecting surfaces, and a refracting surface. A light ray emanating from the structure of the eye enters the lens and contributes to the formation of a correctly oriented real image. The light ray is reflected in an ordered sequence of reflections, first as a negative reflection in a posterior direction from an anterior reflecting surface and next as a positive reflection in an anterior direction from a posterior reflecting surface. The light ray contributes to forming the image of the structure of the eye either anterior to the lens or within the lens and proceeds along a pathway to the objective lens of the biomicroscope used for stereoscopic viewing and image scanning.

Abstract: A diagnostic and therapeutic contact lens is provided for use with the slit lamp or other biomicroscope for the examination and treatment of the structures of the eye including that of the fundus and anterior chamber. The lens comprises a contacting portion adapted for placement on the cornea of an examined eye, two reflecting surfaces and a refracting portion. Light rays emanating from structures within the eye pass through the cornea and contacting portion of the lens and first reflect from the anterior reflecting surface as a positive reflection in a posterior direction. Following the first reflection the light rays reflect as a positive reflection in an anterior direction from the posterior reflecting surface to a refracting portion through which the light rays exit the lens.

Abstract: The lens of the present invention relates to multifocal spectacle lenses, including bifocal and trifocal lenses, with improved cosmetic appearance, optical performance and wide visual field. The lens comprises a plurality of axially layered and bonded lens sections of continuous curvature at least one of which has a changing refractive index incorporating a refractive index blend area oriented transverse to a meridian of the lens. The blend eliminates visibility of the joining area of adjacent portions of generally constant refractive index and the abrupt magnification shift and image jump typical of segmented multifocal lenses. The areas of generally constant refractive index provide the refractive powers for corresponding discrete vision portions of the lens. The other layer(s) of the lens incorporates a constant or similarly changing refractive index.

Abstract: The present invention relates to a gradient index progressive addition spectacle lens that provides improved optical performance and a wide visual field. The lens comprises a plurality of axially layered and bonded lens sections of continuous curvature at least one of which has a refractive index gradient oriented transverse to a meridian of the lens that functions as a progressive intermediate vision zone between viewing portions of different refractive index that provide the refractive powers for corresponding vision portions of the lens. The other layer(s) of the lens incorporates a generally constant or similarly changing refractive index.

Abstract: A gonioscopic viewing system is provided for diagnosis or laser treatment of the anterior chamber angle of a patient's eye. A first lens system includes a concave posterior lens surface with a shape substantially corresponding to the shape of an average cornea so that, when placed on a patient's eye, light rays originating at the anterior chamber angle and passing through the aqueous humor, pass through the cornea and the posterior lens surface of the first lens system and are directed by the first lens system toward an image forming system. An image forming system is optically aligned with the first lens system for capturing the light rays directed by the first lens system and focusses the light rays to form a real image of the anterior chamber angle outside of the patient's eye.

Abstract: An inverting and reversing prism system for a stereo microscope having an optical longitudinal axis and left and right eye viewing systems having left and right longitudinal axes, respectively, along which left and right beam paths are transmitted, respectively, comprising: at least four reflecting surfaces (13, 15, 16, 13A and 13A, 15A, 16A, 13) in each beam path (14, 14A), two of the reflecting surfaces (13, 13A and 13A, 13) in each beam path comprising inlet and outlet surfaces, respectively, for deflecting the beam path by 90.degree., the inlet and outlet surfaces in each beam path being oriented 45.degree. relative to the optical longitudinal axis of the microscope and 90.degree. relative to each other, with a line of intersection (26) of planes containing the inlet and outlet surfaces in each beam path defining an angle of 45.degree.

Abstract: A lens arrangement for use in vitreoretinal surgery includes a contact lens element including a posterior surface having a shape adapted to fit an average cornea for placement on a patient's eye and an anterior surface. The contact lens element transmits light emanating from the patient's eye for viewing a structure of the patient's eye. A flange surrounds and holds a peripheral region of the contact lens element and extends radially onto the scleral region of the patient's eye. The flange has a posterior surface with a shape adapted to fit an average scleral curvature so that the flange rests on the sclera for stabilizing a position of the contact lens on the patient's cornea. The flange includes at least one opening allowing access to an incision through which a surgical tool or instrument may be inserted into the eye.

Abstract: An indirect ophthalmoscopy lens system includes a contact lens device and a separate image erecting component. The contact lens device includes a first holder, a contact lens element having a concave posterior surface for placement on a cornea of a patient's eye and a first image forming lens system located anterior of the contact lens element and cooperating with the contact lens element for focussing light emanating from the retina of the patient's eye for forming a real, inverted, aerial image of the patient's retina anterior of the first image forming lens system. The first holder mounts the contact lens element and the first image forming lens system in a fixed relationship to one another.

Abstract: An apparatus and method for cleaning an optical component having opposed lens surfaces and an outer peripheral area. The apparatus includes a rotatable holder for supporting and retaining the optical component via the outer peripheral area so that at least a useful optical area of at least one of the opposed surfaces is fully exposed to air when the holder and optical component are rotated. A drive device is provided coupled to the holder for rotatably driving the holder to centrifugally force a liquid from the surface. The method includes the steps of, positioning the optical component within a holder and retaining the optical component in a region of the outer peripheral edge so that at least a useful optical area of one of the surfaces is fully exposed to air, applying a liquid to the exposed surface of the optical component, and spinning the optical component at a high rate of speed to clean and dry the optical component.

Abstract: CLAIM The ornamental design for an indirect ophthalmoscopy lens retaining ring, as shown and described. DESCRIPTION FIG. 1 is a side elevational view of an indirect opthalmoscopy lens retaining ring, showing my new design; FIG. 2 is a cross-sectional view taken along lines 2—2 of FIG. 1; FIG. 3 2 is an end elevational view taken from the left of FIG. 1 and; FIG. 4 3 is an end elevational view taken from the right of FIG. 1.