System of measure the topography of both corneal surfaces...

Details System of measure the topography of both corneal surfaces... System of measure the topography of both corneal surfaces...

2005-07-05

2005-07-05

Manuel, George (Department: 3762)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

Reexamination Certificate

active

06913358

ABSTRACT:
The invention refers to a system to measure the topography of both surfaces of the cornea (6) and it is thickness, based on a collimated light beam, namely a laser beam, expanded in a fan shape (5) by a cylindrical lens (4) provided with rotational movement. The fan expanded beam (5) produces an image of a corneal section by light diffusion; this image is captured by one or more video cameras (2, 3). The rotation of the cylindrical lens (4) causes the simultaneous rotation of the corneal section image, producing a complete scanning of the same cornea (6).

REFERENCES:
patent: 6575573 (2003-06-01), Lai et al.

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