Patent ID: 9594257
Date: 2017-03-14
CPC Classifications: A61B,G02C

Claim:
1. A method of supplying, prescribing or selecting an anti-myopia lens for a myopic eye of a patient, comprising the steps of: measuring the central refractive error of the myopic eye, taking the patient's history to assess the patient's propensity for progressive myopia, including the patient's familial history of myopia, without measuring peripheral refractive error in the eye, assessing the level of propensity of the patient for progressive myopia by having regard to the patent history, selecting from a set, kit or stock of pre-manufactured lenses a first selected lens having (i) a central corrective refractive power that best matches the measured central refractive error and (ii) a level of peripheral myopic defocus that best matches the assessed propensity for progressive myopia, trying said first selected lens on the myopic eye and determining from the response of the patient whether or not peripheral blur associated with said myopic defocus of the first selected lens is acceptable, if the level of myopic defocus is determined to be acceptable, then supplying or prescribing an anti-myopia lens having the central power and the peripheral defocus of the first selected lens for the patient, if the level of myopic defocus of the first selected lens is determined to be unacceptable, then selecting a further lens from said set, kit or stock of lenses having the same the same central corrective power as the first selected lens but having a reduced level of peripheral myopic defocus, and supplying or prescribing for the patient an anti-myopia lens having the central corrective refractive power and the reduced level of peripheral myopic defocus of said further selected lens.