Journalartikel
Autorenliste: Schroeder, B; Krzizok, T; Traupe, H
Jahr der Veröffentlichung: 1998
Seiten: 466-473
Zeitschrift: RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren
Bandnummer: 168
Heftnummer: 5
ISSN: 0936-6652
DOI Link: https://doi.org/10.1055/s-2007-1015163
Verlag: Georg Thieme Verlag
Abstract:
Purpose: To investigate the paths of the rectus extraocular muscles (EOMs)in patients with high axial myopia, using high-resolution magnetic resonance imaging (MRI). Methods: Coronal MR images (T-1 weighting) of the orbit were obtained with controlled gaze. Positions of recti EOMs were measured digitally in the middle of the orbit, using the NIH-image analysis software. Orbits of three different patient groups were analysed. Group 1 (n=14 orbits): Patients with high axial myopia and restrictive eye motility. Group 2 (n=8 orbits) subjects with high axial myopia and normal eye motility. Controls (n=11 orbits) with normal eye motility and no refractive error. Results: In comparison to the controls, patients with high axial myopia were found to have significant misplacement of the recti EOMs. Thus in group 1 (group 2 within brackets) the lateral rectus muscle (LR) was misplaced 2.9 (1.4) mm into the lower temporal quadrant p < 0.001 (p = 0.07). The course of the superior rectus muscle (SR) was shifted 1.5 (1.5) mm medially p=0.02 (p=0.03) and the path of the inferior rectus muscle (IR) 1.3 (1.3) mm medially p=0.06 (p=0.06). The medial rectus muscle (MR) showed a 1.3 (1.2) mm downward mislocation p=0.01 (p=0.07). Conclusions: In patients with high axial myopia (group 1 and group 2) misplacement of all rectus EOMs could be demonstrated by high resolution MRI with controlled gaze. All patients showed an approximately equal amount of MR, SR and IR mislocation. However, misplacement of the LR was significantly greater in patients with high myopia and restrictive eye motility (group 1) than in those without restrictive ocular motility (group 2), p=0.03. We therefore assume that LR downward mislocation is a major determinant for restrictive eye motility in high myopia.
Zitierstile
Harvard-Zitierstil: Schroeder, B., Krzizok, T. and Traupe, H. (1998) Magnetresonanztomographische Messungen des Verlaufs der geraden äußeren Augenmuskeln bei Normalpersonen und bei Patienten mit hochgradiger Kurzsichtigkeit, RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren, 168(5), pp. 466-473. https://doi.org/10.1055/s-2007-1015163
APA-Zitierstil: Schroeder, B., Krzizok, T., & Traupe, H. (1998). Magnetresonanztomographische Messungen des Verlaufs der geraden äußeren Augenmuskeln bei Normalpersonen und bei Patienten mit hochgradiger Kurzsichtigkeit. RöFo: Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren. 168(5), 466-473. https://doi.org/10.1055/s-2007-1015163
Schlagwörter
ESOTROPIA; extraocular muscles; high axial myopia; Magnetic resonance imaging (MRI); orbit