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An Intraocular Pressure Measurement Technique Based on Acoustic Radiation Force Using an Ultrasound Transducer: A
Hee Su Lee1, Eun Young Jeong1, Jin Ho Sung1
1Department of Medical Biotechnology, Dongguk University, Seoul 04620, Korea.
Sensors (Basel, Switzerland)
|April 3, 2021
Summary
This study introduces a new method using acoustic radiation force to measure intraocular pressure (IOP), a key factor in glaucoma. The technique shows a strong correlation between ocular displacement and IOP, offering a promising diagnostic tool.
Area of Science:
- Biomedical Engineering
- Ophthalmology
- Acoustics
Background:
- High intraocular pressure (IOP) is a primary risk factor for glaucoma.
- Accurate IOP measurement is crucial for early glaucoma diagnosis and treatment.
Purpose of the Study:
- To propose and experimentally demonstrate a novel technique for measuring IOP using acoustic radiation force.
- To investigate the relationship between acoustic radiation force-induced ocular displacement and IOP.
Main Methods:
- Developed a novel IOP measurement technique utilizing acoustic radiation force to induce and measure ocular surface displacement.
- Fabricated a 5 MHz single-element transducer and used gelatin phantoms with varying stiffness for experimental validation.
- Correlated experimental measurements with IOP values obtained from a commercial tonometer.
Main Results:
- Demonstrated that acoustic radiation force can induce measurable axial displacement on the ocular surface.
- Established a significant correlation between the degree of ocular displacement and IOP.
- Experimental results validated the proposed technique's potential for IOP assessment.
Conclusions:
- The acoustic radiation force technique shows promise as a novel method for accurate IOP measurement.
- This technique could aid in the early diagnosis and management of glaucoma.
- Further research and development are warranted to translate this technique into clinical practice.
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