Non-contact instrument for measurement of internal optical pressure
US6595920B2 · kind B2 · utility
13Cited by
13References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Oct 13, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/152
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for measuring the intraocular pressure of a cornea includes an interferometer directing a beam of a coherent light along a path to the cornea, a sensor for sensing the reflected light from the cornea, an air supply device for directing puffs of air to the cornea in alignment with the beam to cause the surface of the cornea to be artificially displaced and means for measuring variations of light intensity reaching the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.