Device and method for determining geometric measurement...

Details Device and method for determining geometric measurement... Device and method for determining geometric measurement...

2003-03-26

2008-10-14

Schwartz, Jordan M (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S206000, C351S221000, C351S246000

Reexamination Certificate

active

07434933

ABSTRACT:
A device for determining geometric measurement values of an eye, in particular a human eye, comprises a light projector for projecting a beam of rays through a section of the eye and image capturing means for capturing two images of a partial region of the section illuminated by the light projector at two angles of observation from two different positions outside the beam of rays. The device comprises moreover image processing means for determining the cornea from the two images and for determining the corneal thickness from the two images. The device furthermore comprises processing means for calculating the thickness of the actual cornea of the eye directly from the corneal thickness determined from the first image and from the corneal thickness determined from the second image through formation of weighted mean values.

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patent: WO 01/62140 (2001-08-01), None

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