2024-07-24 03:27:13
Development of ‘Extraocular Muscle Strength Measurement Device’… Establishment of Normal Muscle Strength Movement Standards
If anesthetic eye drops are used, the degree of paralysis and recovery status can be compared even in an outpatient setting.
A joint research team led by Professor Shin Hyun-jin of the Department of Ophthalmology at Konkuk University Hospital and Professor Kang Hyeon-gyu of the Department of Mechanical and Electronic Engineering at Konkuk University Global Campus has developed an ‘extraocular muscle strength measurement device’ for precise strabismus surgery.
Through this, the research team was able to determine a customized strabismus treatment surgical method for each patient and accurately determine the recovery status, enabling more precise strabismus treatment.
The extraocular muscles are six muscles that move the eyeballs in the eyes, and the third, fourth, and sixth cranial nerves control the extraocular muscles. When these nerves are paralyzed (paralytic strabismus), the eyes do not move in a certain direction, the two eyes do not focus on each other, and double vision occurs, causing serious difficulties in daily life.
In treating patients with paralytic strabismus, assessing the strength of the extraocular muscles is an important factor. It is an important indicator because it determines the surgical method by determining the degree of remaining strength of the extraocular muscles, and the strength of the extraocular muscles returns to normal as the paralysis improves.
If there is some remaining strength in the paralyzed extraocular muscles, correction is possible with myectomy, which removes part of the paralyzed muscles to strengthen them. In cases where muscle weakness is severe, myotransposition surgery is performed, which moves the location of the muscles in other areas to the paralyzed side.
The results of the extraocular muscle strength measurement device developed by the research team this time showed that the average horizontal muscle that moves the eyes left and right was 95g, and the average vertical muscle that moves them up and down was 91g. Based on this, the research team was able to quantitatively estimate the degree of paralysis and recovery status of paralyzed strabismus patients. In addition, since it can be measured by simply instilling anesthetic eye drops, it can be used both in outpatient and operating rooms.
Professor Shin’s research team is continuing to attempt to improve the reproducibility and accuracy of strabismus correction through biomechanical research on extraocular muscles. Currently, they have developed three types of extraocular muscle tension and muscle strength measurement devices, registered two patents, and completed one application.
Professor Shin said, “Until now, surgeries have only measured the angle of strabismus and did not consider the tension or strength of the extraocular muscles,” and expressed his ambition to “create a new approach to strabismus surgery by measuring the tension and strength of the extraocular muscles.”
Reporter Yoon Hee-sun [email protected]
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2024-07-24 03:27:13