ID | 58557 |
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Author |
Kono, Reika
Department of Ophthalmology, Medical School, Okayama University
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Ohtsuki, Hiroshi
Division of Ophthalmology, Okayama Saiseikai General Hospital
Kishimoto, Fumiko
Division of Ophthalmology, Ibara City Hospital
Hamasaki, Ichiro
Department of Ophthalmology, Okayama University Hospital
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Morizane, Yuki
Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
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Shiraga, Fumio
Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
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Abstract | Purpose
This study aimed to investigate the characteristics of the extraocular muscles and the orbital connective tissue pulleys in Japanese patients with age-related distance esotropia (ARDE) and high myopia using magnetic resonance imaging (MRI). Methods This was a retrospective case-series study. High-resolution coronal MRI scans of 12 orbits were obtained in 6 patients with ARDE and high myopia (age range: 51–69 years). We analyzed the images to determine the positions of the rectus muscle pulleys relative to the center of the globe, the integrity of the lateral rectus-superior rectus muscle (LR-SR) band, and the LR angle (the angle between the major axis of the LR and the vertical plane). Results The distance esotropia ranged from 4 to 25∆, and 3 cases exhibited vertical deviations. The mean (±standard deviation (SD)) axial length was 28.5 (± 1.6) mm. The mean positions of the medial rectus muscle pulley and LR pulley were 1.3 mm inferior and 1.4 mm inferior, respectively, to those seen in the normal control group in our previous study (P = 0.002 and P = 0.05, respectively). All 12 orbits had abnormal elongated LR-SR bands, and 8 orbits (67%) displayed ruptured LR-SR bands. The LR angle (mean±SD; 18.8° ± 8.5°) increased significantly with the inferior displacement of the LR pulley (R2 = 0.77, P = 0.0002). Conclusions Inferior displacement of the LR pulley and abnormal LR-SR bands were seen in Japanese ARDE patients with high myopia, as was found in ARDE patients without high myopia. The LR angle might be useful for judging the degree of LR pulley displacement. |
Keywords | age-related distance esotropia
esotropia
high myopia
orbital pulley
sagging eye syndrome
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Published Date | 2019-01-22
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Publication Title |
Graefe's Archive for Clinical and Experimental Ophthalmology
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Volume | volume257
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Publisher | Springer
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Start Page | 662
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End Page | 662
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ISSN | 0721832X
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NCID | AA11623893
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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File Version | author
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Related Url | isVersionOf https://doi.org/10.1007/s00417-019-04250-0
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