Process and apparatus for examining the visual functions of the eye
US7396128B2 · kind B2 · utility
17Cited by
7References
7Claims
0Family size
Inventors
Key dates
| Filing date | Jun 18, 2004 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Jun 18, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/163
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The visual function is determined with the help of test images, comprising inducing photostress induced by illuminating the eye with an intense light, then measuring the time needed for the recovery of the visual function before the illumination. The test images are periodically moving test images, and the visual function is determined on the basis of detecting the phenomenon of optokinetic nystagmus. According to another process the visual function is determined by measuring critical fusion frequency (CFF) before and after the photostress.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.