Apparatus for analysis and correction of abnormal refractive errors of the eye
Patent 4721379 Issued on January 26, 1988. Estimated Expiration Date: 
June 23, 2006. 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.
June 23, 2006. 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 ReferencesSurgical microscope system Apparatus and process for recurving the cornea of an eye Laser ophthalmic surgical system Method for measuring intraoperative and immediate postoperative effects of radial keratotomy Patent #: 4606623 InventorAssigneeApplicationNo. 06/877510 filed on 06/23/1986US Classes:351/212, For cornea curvature measurement606/5Recurving or reshaping of the eyeExaminersPrimary: Corbin, John K.Assistant: Dzierzynski, Paul M. Attorney, Agent or FirmInternational ClassesA61B 3/107 (20060101)A61F 9/007 (20060101) A61F 9/01 (20060101) A61B 19/00 (20060101) AbstractThe invention contemplates instrumentation to aid in performing refraction-corrective surgery on the cornea, (1) by determining the topography of the anterior surface of the cornea, the determination being in the form of digitized data entered into computer storage, (2) by determining the local thickness of the cornea along multiple axes, the determination being also in the form of digitized data entered into computer storage, and (3) by providing a CAD/CAM display of both categories of data, correlated as appropriate for the surgeon's selective display of a corneal region, aspect or section, as the surgeon may deem pertinent to a prospective operation. | |
