Toric lens calculator
AssigneeJagrat Natavar DAVE
InventorsSanjay Ram Swaroop Argal, Munavvar Tahir Hussain
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Abstract
The present invention, in some embodiments thereof, provides a method and device for automatically calculating, prior to an IOL (intraocular lens) implantation procedure in a patient, a power and an axis location of the IOL in the implantation procedure, the method comprising: inputting to an electronic device keratometry parameters of the patient; inputting to the electronic device surgical parameters of the IOL implantation procedure on the patient; analyzing the patient keratometry parameters and the surgical parameters by the electronic device; and automatically determining by the electronic device the power and the axis location of the IOL in the implantation procedure in response to the inputs.
Claims21
A method for automatically calculating, prior to an IOL (intraocular lens) implantation procedure in a patient, a power and an axis location of the IOL in the implantation procedure, said method comprising:
- inputting to an electronic device keratometry parameters of the patient;
- inputting to the electronic device surgical parameters of the IOL implantation procedure on the patient, said surgical parameters including a surgically induced astigmatism (SIA) measurement;
- analyzing the patient keratometry parameters and the surgical parameters by the electronic device;
- determining a crossed-cylinder result (corneal plane), based on said analyzing, by the electronic device, wherein said crossed-cylinder result is calculated from the difference between a pre-op corneal astigmatism determined from the patient keratometry parameters and the SIA measurement;
- comparing the determined crossed-cylinder result (corneal plane) with data in a database by the electronic device to select an IOL suitable for the implantation procedure, the selected IOL having cylinder power data corresponding to the crossed-cylinder result;
- and
- after said selecting an IOL, automatically determining by the electronic device the power and the axis location of the selected IOL in response to said comparing.
A system for automatically calculating, prior to an IOL (intraocular lens) implantation procedure in a patient, the power and axis location of the IOL in the implantation procedure, said system comprising:
- an input device configured for receiving keratometry parameters of the patient and surgical parameters of the IOL implantation procedure on the patient, the surgical parameters including a surgically induced astigmatism (SIA) measurement;
- a processor configured for analyzing the patient keratometry parameters and the surgical parameters received from the input device and determining a crossed-cylinder result (corneal plane) wherein said crossed-cylinder result is calculated from the difference between a pre-op corneal astigmatism determined from the patient keratometry parameters and the SIA measurement;
- a comparator configured for comparing the determined crossed-cylinder result (corneal plane) with data in a database to select an IOL suitable for the implantation procedure, the selected IOL having cylinder power data corresponding to the crossed-cylinder result and, after selecting the IOL suitable for the implantation procedure, automatically determining the power and axis location of the selected IOL in response to the comparing;
- and
- a memory device configured for storing data.
20-34. (canceled)
Dependencies are inferred from the claim text.