Shape discrimination vision assessment and tracking system
US9155461B2 · kind B2 · utility
10Cited by
14References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2010 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Dec 17, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/1225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A handheld vision tester and a method of self-testing vision of a user of the handheld vision tester are provided. The method ensures that a display of the handheld vision tester is within an acceptable distance to eyes of the user. Variations of the acceptable distance are compensated for. The method further displays different shapes, either dynamically or statically, on the display to the user. The method also allows for input to the handheld vision tester by the user in response to the different shapes displayed. Results of the self-test are determined from the inputs to the handheld tester by the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.