Method and apparatus for determining true intraocular pressure
US7481767B2 · kind B2 · utility
7Cited by
4References
5Claims
0Family size
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Key dates
| Filing date | Sep 8, 2005 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Dec 25, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/165
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for measuring intraocular pressure of an eye use an empirically derived function wherein an inward applanation pressure P1 and an outward applanation pressure P2 obtained during a corneal deformation cycle caused by a fluid pulse are separately weighted so as to minimize cornea-related influence on the intraocular pressure value calculated by the function. In one embodiment, the function is optimized, at least in part, to minimize change in calculated IOP between measurements made before surgical alteration of the cornea and measurements made after surgical alteration of the cornea.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.