Binocular refraction instrument, set of test images, binocular refraction method and computer program associated thereof
US12369791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2020 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Dec 29, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/0012
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention concerns a couple of test images, for a binocular refraction method, that comprises: —a first test image (21) to be provided to a first eye of a subject, comprising a central image (21c) surrounded by a first peripheral image (21p), this central image comprising at least one optotype (21o); and—a second test image (22) to be provided to a second eye of the subject, comprising a central image (22c) surrounded by a second peripheral image (22p) substantially identical to the first peripheral image, this central image being deprived of optotypes, or comprising only optotypes (22o) with a low contrast or sharpness level. The invention concerns also an associated binocular refraction method and refraction instrument, and an associated computer program.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.