Ophthalmic aberrometer for measuring aberrations in the eye
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United States of America Patent
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Sep 2, 2008
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N/A
app pub date -
Nov 4, 2004
filing date -
Nov 7, 2003
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Abstract
A ophthalmic aberrometer uses a wavefront sensor aligned with an eye under examination through an optical path and a light source for introducing a light beam into the eye via the optical path, wherein the optical path has a reference through which the light beam passes before passing to an eye retina to form a reference spot on the retina, a focus dynamic range extender, and an astigmatism dynamic range extender positioned in the optical path between the reference and an eye under examination. The wavefront sensor is positioned to receive a wavefront reflected from the eye retina via the optical path.
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