Intraocular lens that matches an image surface to a retinal shape, and method of designing same
First Claim
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1. A method of matching an image surface to a retina surface, comprising:
- receiving a measurement of at least a shape of a retina of a subject eye;
determining a lens power that would focus light passing through the cornea and the pupil of the subject eye onto the retina surface;
determining a shape of an image surface that would be produced by the eye with an IOL having the lens power;
comparing the image surface shape to the shape of the retina surface;
selecting a base lens power, including;
in the case the image surface is flatter than the retina surface, selecting a base lens power greater than the lens power;
in the case the image surface is less flat than the retina surface, selecting a base lens power less than the lens power;
calculating a complimentary lens power equal to the lens power minus the selected base lens power; and
providing for insertion in the subject eye'"'"'s line of sight a base lens having the base lens power and a complementary lens having the complementary lens power.
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Abstract
An intraocular lens (IOL), system, and method having a base lens and a complementary lens selected to form a curved image surface matching a retina surface when placed in an eye'"'"'s line of sight.
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Citations
9 Claims
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1. A method of matching an image surface to a retina surface, comprising:
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receiving a measurement of at least a shape of a retina of a subject eye; determining a lens power that would focus light passing through the cornea and the pupil of the subject eye onto the retina surface; determining a shape of an image surface that would be produced by the eye with an IOL having the lens power; comparing the image surface shape to the shape of the retina surface; selecting a base lens power, including; in the case the image surface is flatter than the retina surface, selecting a base lens power greater than the lens power; in the case the image surface is less flat than the retina surface, selecting a base lens power less than the lens power; calculating a complimentary lens power equal to the lens power minus the selected base lens power; and providing for insertion in the subject eye'"'"'s line of sight a base lens having the base lens power and a complementary lens having the complementary lens power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for specifying a plurality of intraoptical lenses that combine to form an image shape matched to a retina surface, comprising:
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biometric apparatus operable to measure the dimensions and retina shape of an eye and to produce measurement data thereof; a computing processor operable to receive the measurement data from the biometric apparatus; and a non-transitory data storage device in data communication with the processor and storing therein information of a plurality of IOL lenses and instructions which, when executed on the processor, cause the system to; determine a lens power of a default IOL that would focus light passing through the cornea and the pupil of the eye onto the retina according to the measurement data; determine a shape of an image surface that would be produced by the eye with the default IOL; compare the image surface shape to the shape of the retina; select a base lens power, including; in the case the image surface is flatter than the retina surface, selecting a base lens power greater than the default IOL lens power; and in the case the image surface is less flat than the retina surface, selecting a base lens power less than the default IOL lens power; calculating a complimentary lens power equal to the default lens power minus the selected base lens power; and specifying a base lens having the base lens power and a complementary lens having the complementary lens power for implantation in the eye.
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Specification