Non-invasive measurement of eyeball pressure using vibration
US5251627A · kind A · utility
109Cited by
4References
7Claims
0Family size
Inventor
Key dates
| Filing date | Jun 27, 1991 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Jun 27, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/165
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tonometer. The tonometer includes means (6) for generating a surface wave on the eye. The surface wave is monitored at a receiving transducer (10) and phase information is extracted using a phase meter (14). Using the phase information the velocity of the wave may be determined and from this information the pressure in the eyeball may be determined in signal processor (16). The eyeball pressure may be displayed in display (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.