Calculating an intraocular lens (IOL) power according to a directly determined IOL location
AssigneeNovartis AG
InventorMichael J. Simpson
Life of this patent
Estimating the term…
Abstract
In certain embodiments, calculating intraocular lens (IOL) power includes determining locations of parts of an eye along an axis of the eye. The locations include the location of a cornea, the anterior and posterior locations of a crystalline lens, and the location of a retina. An IOL location of an IOL is calculated according to the anterior and posterior locations of the crystalline lens. Corneal data is also determined. The IOL power is calculated using the corneal data, the IOL location, and the retinal location. In certain embodiments, refractive indices are determined for segments of the axis, and at least one location is adjusted according to the refractive indices.
Claims19
A method for calculating intraocular lens (IOL) power comprising:
- determining a plurality of locations of parts of an eye along an axis of the eye, the locations comprising a corneal location of a cornea, a crystalline lens anterior location of a crystalline lens, a crystalline lens posterior location of the crystalline lens, and a retinal location of a retina;
- calculating an IOL location of an IOL according to the crystalline lens anterior location and the crystalline lens posterior location;
- determining corneal data of the cornea;
- and
- calculating the IOL power of the IOL according to the corneal data, the IOL location, and the retinal location.
A system for calculating intraocular lens (IOL) power comprising:
- a memory configured to store location information;
- and
- one or more processors configured to:
- determine a plurality of locations of parts of an eye along an axis of the eye, the locations comprising a corneal location of a cornea, a crystalline lens anterior location of a crystalline lens, a crystalline lens posterior location of the crystalline lens, and a retinal location of a retina;
- calculate an IOL location of an IOL according to the crystalline lens anterior location and the crystalline lens posterior location;
- determine corneal data of the cornea;
- and
- calculate the IOL power of the IOL according to the corneal data, the IOL location, and the retinal location.
One or more non-transitory computer-readable media storing logic for calculating intraocular lens (IOL) power, when executed by one or more processors the logic configured to:
- determine a plurality of locations of parts of an eye along an axis of the eye, the locations comprising a corneal location of a cornea, a crystalline lens anterior location of a crystalline lens, a crystalline lens posterior location of the crystalline lens, and a retinal location of a retina;
- calculate an IOL location of an IOL according to the crystalline lens anterior location and the crystalline lens posterior location;
- determine corneal data of the cornea;
- and
- calculate the IOL power of the IOL according to the corneal data, the IOL location, and the retinal location.
Dependencies are inferred from the claim text.