Multifocal corneal sculpturing
December 31, 2017. 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 ReferencesBifocal intra-ocular lens Laser surgery method Method for controlled corneal ablation Noncontact laser microsurgical apparatus Multifocal intraocular lens Apparatus and process for application and adjustable reprofiling of synthetic lenticules for vision correction Ablatable mask of polyoxyalkylene polymer and ionic polysaccharide gel for laser reprofiling of the cornea Laser shaping of ocular surfaces using ablation mask formed in situ Laser surgical method of sculpting a patient's cornea and associated intermediate controlling mask Laser corneal surgery InventorApplicationNo. 001524 filed on 12/31/1997US Classes:606/5, Recurving or reshaping of the eye606/4OphthalmicExaminersPrimary: Harris-Ogugua, SonyaAttorney, Agent or FirmInternational ClassA61N 005/06AbstractThere is disclosed herein a method and system for corneal sculpting to create a multifocal refractive surface on the cornea of the eye. The refractive surface may comprise a central area and successive rings exposed outwardly toward the periphery and are of varying dioptric powers which may begin with the highest dioptric power in the center and decreasing powers of varying diopters progressing toward the periphery or vice-versa or alternating patterns of dioptric power, i.e., near/far, far/near or any combination. Furthermore, the multiple zones may be asymmetric, dicentric, ovoid, or the like. Suitable masks, barriers and iris diaphragms are described for facilitating sculpting of the different surfaces to achieve the desired multifocal refractive surfaces.Other References
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