الفهرس 
Anatomy of Inferior Oblique MuscleOnly 14 pages are availabe for public view
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Abstract
Weakening of inferior oblique muscle has been used to treat ocular motility disorders including inferior oblique overaction (IOOA) and dissociated vertical deviation (DVD). As inferior oblique muscle is the primary extorter of the eye, It is well known that inferior oblique weakening procedures could affect fundus cyclotorsion. This study studies the effect of one of inferior oblique weakening procedures, inferior oblique anterior transposition (IOAT), on fundus cyclotorsion.
This study was conducted on 25 cases (48 eyes) with mean age 8.84 years (range; 2-24). IOOA and hypertropia (HT) decreased significantly from mean 2.5 ± 0.84 (range; 1-4) and 55 ± 20 PD (range;15-80) preoperatively to 1.17 ± 0.39 (range;1-2) and 15.64 ±10.08 (range; 0-30) (p<0.001). Objective excyclotorsion, determined by calculation of the disc-fovea angle on colored fundus photo, decreased significantly from 12.67 ± 8.13 degree preoperatively, to 3.40 ± 5.06 degree (p<0.001). During the follow-up period (mean; 9.16 months), only 2 cases (8%)
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developed post-operative persistent defective elevation in abduction, or anti-elevation syndrome, as a post-operative complication.