Apparatus for analysis and correction of abnormal refractive err

Details Apparatus for analysis and correction of abnormal refractive err Apparatus for analysis and correction of abnormal refractive err

1986-06-23

1988-01-26

Corbin, John K.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

1283031, A61B 310, A61B 1736

Patent

active

047213795

ABSTRACT:
The 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.

REFERENCES:
patent: 4157859 (1979-06-01), Terry
patent: 4461294 (1984-07-01), Baron
patent: 4565197 (1986-01-01), Daly
patent: 4606623 (1986-08-01), Schachar

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