Geometric optical power measurement device
First Claim
1. An ophthalmic optical power measurement method comprising:
- directing an input beam of light into an eye such that the input beam scatters from a location on the retina, thus creating an output beam that exits through the pupil of the eye;
determining the angular size of the output beam; and
determining the optical power of the eye based on the angular size of the output beam.
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Accused Products
Abstract
An ophthalmic optical power measurement device can include a light source configured to direct an input beam of light into the eye of a patient. The ophthalmic optical power measurement device can also include an aperture configured to receive an output beam that consists of light from the input beam that scatters from a location on the retina of the eye and exits through the pupil of the eye. The ophthalmic optical power measurement device can also include a detector configured to receive the output beam after it has passed through the aperture. A processor can be configured to determine the size of a spot created by the output beam on the detector, and to determine the optical power of the eye based upon the size of the spot.
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Citations
15 Claims
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1. An ophthalmic optical power measurement method comprising:
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directing an input beam of light into an eye such that the input beam scatters from a location on the retina, thus creating an output beam that exits through the pupil of the eye; determining the angular size of the output beam; and determining the optical power of the eye based on the angular size of the output beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification