Handheld vision tester and calibration thereof
US9498118B2 · kind B2 · utility
2Cited by
13References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2015 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Apr 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2380/08
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In one aspect, there is provided a handheld vision tester. In this particular embodiment, the handheld vision tester comprises a display, cursor control, and an interface port. The display delivers vision tests to a user. The user interacts with the vision tests by using the display and cursor control. The interface port allows for communication of results of the vision tests from the handheld tester to external devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.