Apparatus for determining intraocular pressure
US5190042A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 1990 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Sep 14, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
To determine intraocular pressure with a tonometer in which a measurement prism presses against the human eye with a given force and a corresponding relationship is established between the force and the area aplanated thereby, it is proposed that a plurality of measured values of force and aplanated area, each being associated with the other, be determined per unit of time during the course of a continuous increase in pressure by means of the power-driven, spring-pretensioned motion of the measurement prism and processed in the form of a curve in such a manner that the intraocular pressure can be determined differentially from the plurality of measured values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.