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A pilot study for intraocular pressure measurements based on vibroacoustic parameters
Deukha Kim1, Youngbeen Chung1, Yeji Yeon2
1Department of Mechanical Engineering, Hanyang University College of Engineering, Seoul, Korea.
Scientific Reports
|January 14, 2021
Summary
This study found that eyeball vibration properties, specifically the change in magnitude of vibration response (CMVR), correlate with intraocular pressure (IOP). This suggests CMVR could be a new method for continuous IOP measurement.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Vibroacoustics
Background:
- Intraocular pressure (IOP) is a critical factor in diagnosing and managing glaucoma.
- Current methods for IOP measurement can be invasive or lack continuous monitoring capabilities.
Purpose of the Study:
- To identify vibroacoustic properties linked to intraocular pressure (IOP) variations.
- To propose a novel method for IOP measurement based on these vibroacoustic properties.
Main Methods:
- Ten ex vivo porcine eyeballs were utilized.
- Vibration response was measured using an accelerometer attached to the eyeball.
- Intraocular pressure was manipulated by injecting balanced salt solution and measured with a tonometer.
Main Results:
- Resonance frequency and the change in the magnitude of the vibration response (CMVR) increased with elevated IOP.
- CMVR demonstrated a strong correlation with IOP (p-value < 0.0001).
- A linear mixed effects model confirmed the relationship between vibroacoustic properties and IOP.
Conclusions:
- Vibroacoustic properties of the eyeball are significantly correlated with changes in intraocular pressure.
- The CMVR shows potential as a novel parameter for IOP assessment.
- This research paves the way for future continuous IOP monitoring systems.
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