Device and method for determining geometric measurement values of an eye
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United States of America Patent
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Oct 14, 2008
Grant Date -
Oct 9, 2003
app pub date -
Mar 26, 2003
filing date -
Apr 5, 2002
priority date (Note) -
In Force
status (Latency Note)
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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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