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Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye
Published on: June 20, 2015
New ways to measure intraocular pressure
Mohammed K ElMallah1, Sanjay G Asrani
1Duke University Eye Center, Durham, North Carolina 27710, USA.
Current Opinion in Ophthalmology
|February 28, 2008
Summary
New tonometry technologies offer alternatives for measuring intraocular pressure (IOP). Dynamic contour tonometry shows less dependence on corneal properties, while rebound tonometry is convenient and correlates well with Goldmann applanation tonometry.
Area of Science:
- Ophthalmology
- Biomedical Engineering
Background:
- Intraocular pressure (IOP) measurement is crucial for glaucoma diagnosis and management.
- Traditional methods like Goldmann applanation tonometry can be influenced by corneal properties.
Purpose of the Study:
- To review recent findings on four emerging technologies for measuring intraocular pressure.
- To compare the performance and characteristics of the ocular response analyzer, dynamic contour tonometry, rebound tonometry, and Proview phosphene tonometer.
Main Methods:
- Review of current literature on novel tonometry devices.
- Analysis of reported correlations with Goldmann applanation tonometry and independence from corneal properties.
Main Results:
- Ocular response analyzer measures corneal biomechanics and IOP, showing good correlation with Goldmann applanation tonometry, but requires further study in glaucoma patients.
- Dynamic contour tonometry provides IOP readings independent of corneal thickness.
- Rebound tonometry is convenient, usable without topical anesthesia, correlates well with Goldmann applanation tonometry, but is influenced by corneal properties. Proview phosphene tonometer may reduce patient anxiety but lacks accuracy support.
Conclusions:
- Dynamic contour tonometry offers IOP measurements with reduced dependence on corneal properties compared to Goldmann applanation tonometry.
- Rebound tonometry provides a convenient alternative, correlating well with Goldmann applanation tonometry and usable without topical anesthesia.
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