Method for determining a refraction feature of an eye of a subject, and associated portable electronic device
US12108987B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2019 |
| Grant date | Oct 8, 2024 |
| Priority date | — |
| Expiry date | Sep 11, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/6898
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The method includes the steps of: a) illuminating the pupil of an eye of a subject by a light source of a portable electronic device, the light source being formed by a lighted area displayed on a screen of the portable electronic device; b) acquiring a picture of the pupil of the eye of the subject by an image-capture apparatus of the portable electronic device, the picture including an image of the reflection of the light source on the retina of the eye; and c) determining a refraction feature of the eye taking into account at least a geometrical feature, a positional feature or an intensity distribution of the image of the reflection. An associated portable electronic device is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.