KHẢO SÁT ĐƯỜNG KÍNH CÁC CƠ VẬN NHÃN Ở NGƯỜI VIỆT NAM TRƯỞNG THÀNH BẰNG CẮT LỚP VI TÍNH

Abstract

Introduction: Extraocular muscles are crucial for controlling eye movements, maintaining focused vision, and adjusting binocular vision. Their size varies not only with age and gender but also due to ethnic, racial, and geographic factors. Objective: To measure the diameter of extraocular muscles in adult Vietnamese individuals using computed tomography (CT) scans and to investigate the relationship between muscle size and factors such as age and gender. Methods: This cross-sectional descriptive study measured the diameter of extraocular muscles in 628 patients over 18 years old. Subjects underwent non-contrast cranial CT scans at Thong Nhat Hospital from January to August 2024. Results: The average diameters were: superior muscle group 3.45±0.45 mm, inferior rectus 4.02±0.5 mm, medial rectus 3.72±0.48 mm, and lateral rectus 3.27±0.47 mm. A statistically significant difference was found in the inferior rectus muscle diameter between the two eyes, while other muscles showed no significant difference. Gender differences were statistically significant, and muscle diameters negatively correlated with age (p<0.001). Conclusion: Computed tomography is an effective method for measuring extraocular muscle diameters in adult Vietnamese individuals. The study revealed significant correlations between muscle size and factors such as age and gender.