Ophthalmic apparatus
Patent 6547392 Issued on April 15, 2003. Estimated Expiration Date: 
March 29, 2021. 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.
March 29, 2021. 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 ReferencesOphthalmic apparatus for measuring refractive characteristic of eye to be measured Method of corneal analysis using a checkered placido apparatus System for the determination, the evaluation and the control of the refractive and accommodative status of the eye Ophthalmic measurement apparatus having plural pairs of photoreceiving elements Ocular biometer Ophthalmic apparatus Patent #: 6033075 InventorAssigneeApplicationNo. 819641 filed on 03/29/2001US Classes:351/212For cornea curvature measurementExaminersPrimary: Manuel, GeorgeAttorney, Agent or FirmForeign Patent References
International ClassA61B 003/10Foreign Application Priority Data2000-03-30 JPAbstractAn ophthalmic apparatus comprising an input unit with which data on eye refractive power distribution of an eye to be examined at far vision, which is an unaccommodated state of the eye, and data on eye refractive power distribution of the eye at near vision, which is an accommodated state of the eye are inputted, a display, and a calculation and control unit which obtains data on distribution of difference between both the inputted data on distribution, so as to display at least one of the following data on the display: the data on the eye refractive power distribution at far vision; the data on the eye refractive power distribution at near vision; and the obtained data on the distribution of difference. | |
