Contact lens arrangement for optically examining an eye and trea

Details Contact lens arrangement for optically examining an eye and trea Contact lens arrangement for optically examining an eye and trea

1984-12-28

1986-07-08

Corbin, John K.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351160R, A61B 300, G02C 704

Patent

active

045989842

ABSTRACT:
A contact lens arrangement is described for optically examining an eye and/or treating it by light irradiation, in particular the retina, in the region of or away from the optical axis of the eye.
The contact lens arrangement comprises a Goldmann lens having a plane entry surface and a spherical exit surface, applied to the cornea of the eye, and a compensating element, e.g. a prism, having an entry surface. The compensating element is fixed to the entry surface of the Goldmann lens and its function is to produce an astigmatism opposite to that of the eye with an incident light beam, entering through its entry surface.
This contact lens arrangement enables very accurate focusing of the beam on to a particular point inside the eye.

REFERENCES:
patent: 4065208 (1977-12-01), Curry

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