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: An indirect ophthalmoscopy lens device is provided for use with a slit-lamp or other biomicroscope for examination, laser treatment or surgical treatment of a patient's eye. The device comprises an image forming lens system for collecting and focussing light exiting a patient's eye to form a real image of the fundus of the patient's eye at a location outside the eye and anterior of the image forming lens system. An anterior lens having a convex anterior surface is disposed anterior to the image forming lens system so that the real image formed by the image forming lens system is located posterior of the convex anterior surface. The convex anterior surface of the anterior lens refracts chief rays of light ray bundles of the light exiting the patient's eye generally toward a collecting lens of the slit-lamp or other biomicroscope.

Abstract: An indirect, contact ophthalmoscopy lens device for use with a slit lamp or other biomicroscope comprises a compound contact lens element and an image forming lens system. The compound contact lens element includes a posterior lens portion having a concave posterior surface with a curvature corresponding to a curvature of an average cornea and anterior lens portion having a convex anterior surface. A middle lens portion is disposed between the posterior and anterior lens portions and has an index of refraction that is different from the index of refraction of air and is different from the index of refraction of each of the posterior and anterior lens portions. The middle lens portion includes a posterior surface that conforms with intimate contact to the anterior surface of the posterior lens portion and an anterior surface that conforms with intimate contact to the posterior surface of the anterior lens portion.

Abstract: An indirect ophthalmoscopy lens device includes a plurality of lenses for collecting light emanating from a patient's eye and focussing the light to form a first, real, inverted image of the fundus of the patient's eye outside of the eye, and for reinverting the first, real, inverted image to form an erect image anterior of the device. The first, real, inverted image, rather than being an aerial image, may be formed at least partially within one of the plurality of lenses of the device. A conjugate pupil image, rather than being located in air as an aerial image of the patient's pupil, may be formed within one of the plurality of lenses of the device.