Sadia Sethi, Mohammad Junaid Sethi, Ayat Shah Afridi, Natashah Junaid.
Outcome of Anterior Transposition of the Inferior Oblique Muscle in the Treatment of Inferior Oblique Over-action.
Ophthalmol Update Jan ;14(4):125-7.

Purpose: To study the outcome of anterior transposition of inferior oblique muscle in the treatment of inferior oblique over action. Study Design: This was a hospital based prospective study done at Department of Ophthalmology Khyber Teaching Hospital during January 2014 to June 2016. Methods: A total of 35 patients were included in the study. Type of strabismus, ocular alignment, pre and post operative degree of Inferior Oblique over action were obtained using specified check list. Results: A total of 35 patients were included in the study 57 eyes were operated. All patients had grade +3 inferior oblique overaction. Pre operative V pattern was present in 22 patients. After surgery it remained in only 5 patients. Overall 22 (62.8%) and 6 (17.4%) patients had preoperative estotropia and exotropia. While 7 (20%) patients had only IOOA Inferior oblique over-action improved in (91.4%). Residual hypertropia occurred in 2 (5%) and postoperative hypotropia was observed in 1 (2.8%) patient. Conclusion: We concluded that anterior transposition of inferior oblique is effective for treatment of grade +3 inferior oblique over-action with minimum side effects.

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