Measurement system and method for establishing the refraction of an eye, the radius of curvature of the cornea or the internal pressure of an eye

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United States of America Patent

PATENT NO 10080493
APP PUB NO 20110202017A1
SERIAL NO

13022713

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for establishing the refraction of an eye (9) by means of a refractometer (3) is provided, in which the current visual axis (S) of the eye (9) is established before establishing the refraction, the refractometer (3) is aligned with respect to the visual axis (S) of the eye (9) and the refraction is established after the alignment. The visual axis (S) of the eye (9) is established on the basis of the position of a Purkinje image of at least one light source (41, 50) used to illuminate the eye and a relationship between the position of the Purkinje image and the visual axis (S).

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Patent Owner(s)

  • CARL ZEISS MEDITEC AG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Reimer, Peter Ellwangen, DE 86 1269

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