Method and system for determining an eyeglass prescription
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United States of America Patent
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Oct 10, 2017
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app pub date -
Aug 11, 2015
filing date -
Feb 11, 2013
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Abstract
The invention is directed to a method for determining an eyeglass prescription for an eye, in particular through the use of a non-transitory computer readable medium. The method includes the steps of providing a measurement indicative of the refractive properties of the eye; establishing an optimization space corresponding to a plurality of possible eyeglass prescriptions for the eye; determining a merit function, wherein a value of the merit function corresponds to a visual function of the eye when corrected using one of the plurality of possible eyeglass prescriptions within the optimization space, wherein the merit function includes a term depending on a magnitude of a corrective astigmatism of the one of the plurality of possible eyeglass prescriptions and causing a less optimal value of the merit function the higher the magnitude of the corrective astigmatism and/or the higher the magnitude of a difference between the corrective astigmatism and a subjective corrective astigmatism; and determining the eyeglass prescription by optimizing the value of the merit function. The invention is further directed to a system for determining an eyeglass prescription and a corresponding computer program product.
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