Method and system for determining personalized near addition value, lens with such addition
US10473951B2 · kind B2 · utility
1Cited by
1References
15Claims
0Family size
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Key dates
| Filing date | Mar 7, 2014 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Mar 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/24
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for determining personalized near addition value for non-presbyopes, including measuring fusional amplitudes and phoria with at least one addition value, on both eyes of a person at a working distance; finding a mathematical function that predicts the change of a pair of fusional amplitudes and phoria as a function of addition value based on the addition value and the measured fusional amplitudes and phoria; and determining the near addition value according to a suitable relationship between the pair of fusional amplitudes and phoria on the mathematical function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.