Equipment for the correction of astygmatism by remodelling the corneal surface by means of photo-ablation
Patent 5356409 Issued on October 18, 1994. Estimated Expiration Date: 
November 17, 2012. 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.
November 17, 2012. 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 ReferencesMethod for performing ophthalmic laser surgery Noncontact laser microsurgical apparatus Patent #: 5152759 InventorAssigneeApplicationNo. 977579 filed on 11/17/1992US Classes:606/5, Recurving or reshaping of the eye606/4OphthalmicExaminersPrimary: Aschenbrenner, Peter A.Assistant: Harris, Sonya C. Attorney, Agent or FirmForeign Patent References
International ClassA61B 017/32Foreign Application Priority Data1991-11-21 ITAbstractThe invention relates to equipment for the correction of astygmatism by modelling of the corneal surface by means of photo-ablation. A laser beam produced by an excimer laser is used, which is masked by a special mask (1) in such a way that, at each application, a pre-established surface of the cornea (3) is struck, from which cornea (3) a very thin uniform layer of tissue is removed. | |
