Contact lens with reduced spherical aberration for aphakic eyes
Patent 4195919 Issued on April 1, 1980. Estimated Expiration Date: 
October 31, 1997. 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.
October 31, 1997. 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 References 3227507 3482906 InventorApplicationNo. 05/846829 filed on 10/31/1977US Classes:351/160R, Eye contact type351/167Cataract correction typeExaminersPrimary: Corbin, John K.Assistant: Sugarman, Scott J. Attorney, Agent or FirmInternational ClassG02C 7/04 (20060101)AbstractContact lenses, particularly for aphakic eyes, are characterized by a rear conicoid optical surface that is fitted to the cornea and a front prolate ellipsoidal optical surface of particular power, these surfaces having functionally related configurations.Other References
Field of SearchCataract correction type | |
