The presence of both ipsilateral and contralateral compensatory head postures in our patients showed that three-step or head-tilt test is not helpful in the diagnosis of IR muscle palsy. In comparison with other studies, more patients in our study were treated with IR muscle resection alone. Also, our reoperation rate was lower than other studies. Absence of gross abnormality in the IR muscles at the operation and partial nature of the paresis may explain these good results. Thus, a considerable number of IR muscle palsy cases with the above characteristics may be treated successfully by one muscle surgery (IR muscle resection).
Our version might be appropriate for evaluating HRQOL of the patients with strabismus. The significant increase in the total and subscale scores after strabismus surgery showed the importance of strabismus surgery in improving HRQOL of the patients, especially in psychosocial aspects. The strabismus surgery might have a greater benefit in improving HRQOL of the female patients.
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