Methods and systems for determining a refraction of at least an eye of a person
US11638521B2 · kind B2 · utility
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2References
20Claims
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Key dates
| Filing date | Dec 4, 2018 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | Jun 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H50/50
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Method for determining a refraction of at least an eye of a person under specific spectral conditions, the method including: an eye illumination step, during which the eye of the person is illuminated under the specific spectral conditions, the specific spectral conditions being provided by a polychromatic source having a spectrum which is different from the spectrum of a white light source and/or by a chromatic filter positioned before the eye of the person and illuminated by a source; and a refraction determination step during which the refraction of the eye of the person is determined under the specific spectral conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.