Ophthalmic inspection lens
AssigneeEOS Holdings, LLC
InventorDavid H Mordaunt
Life of this patent
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Abstract
Single piece ophthalmic inspection devices are provided having a continuous 3-dimensional molded surface preferably made out of plastic. The devices are relatively easier and cheaper to manufacture than existing inspection lenses. The smooth continuous edges are advantages to prevent damage to tissue as well to stop foreign objects accumulating in e.g. the clear regions of the lens. Ergonomic features are built into the ophthalmic inspection device provide for superior control of the device on the patient's eye. In addition, textured knurled or grooved surface provide desired finger grip and control of the device.
Claims7
An ophthalmic inspection lens comprising:
- a circular central optically clear region having a concave tissue interface surface and a convex inspection surface;
- a tubular cylindrical handle concentric with the optically clear region, protruding laterally from the convex inspection surface, and extending parallel to an optical axis of the lens beyond the convex inspection surface;
- a ring-shaped base concentric with the optically clear region and abutting a rim of the concave tissue interface surface;
- and
- a finger rest shelf disposed between and protruding laterally from the tubular cylindrical handle and the ring-shaped base;
- wherein the lens is a single piece of injection molded plastic, and outer surfaces of the lens in a region from the finger rest shelf to the ring-shaped base are molded with a frosted texture preventing internal reflection of light from those surfaces into the central optically clear region.
Dependencies are inferred from the claim text.