Shape discrimination vision assessment and tracking system
US11659990B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jul 21, 2020 |
| Grant date | May 30, 2023 |
| Priority date | — |
| Expiry date | Mar 10, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/1225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method to self-test vision of a user for use with a handheld vision tester includes receiving image data of the user's face, determining dimensions of the user's face based on the received image data, computing a user viewing distance based on the determined dimensions, displaying a vision test based on the computed user viewing distance, receiving user input responses to the vision test, and outputting results of the vision test from the user input responses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.