Lamellar illumination apparatus for eye surgery
April 11, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesEye restraining device Ophthalmological surgery apparatus and methods Method and apparatus for modification of corneal refractive properties Suction ring for surgical operations on the human eye Method for controlled corneal ablation Systems and methods for creating substrate surfaces by photoablation Beam delivery system and method for corneal surgery Method and system for laser thermokeratoplasty of the cornea Uniform-radiation caustic surface for photoablation Patent #: 5490849 InventorApplicationNo. 420129 filed on 04/11/1995US Classes:606/4OphthalmicExaminersPrimary: Sykes, Angela D.Assistant: Harris-Ogugua, Sonya Attorney, Agent or FirmInternational ClassA61N 005/06AbstractApparatus for illuminating a central area of an eye by lamellar lighting during eye surgery. Basically, a support fixture carrying a light emitter is adapted to be placed adjacent to the surgical field. The support fixture, when in place on an eye, directs light from the light emitter toward the surgical field tangentially to the cornea, at an angle of from about 0 to 45° to the plane of the eye iris. The light entering the eye travels along the lamellae of the cornea in the manner of a light pipe. Very little, if any light reaches the back of the eye, avoiding patient discomfort, or is directed toward the surgical microscope as glare. This lamellar lighting combines scleral scatter and retro illumination. In preferred embodiments, the light emitter may be mounted on, or incorporated in, a conventional eyelid speculum or a fixation ring. | |
