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Turk J Ophthalmol. 2018 Oct;48(5):267-273. doi: 10.4274/tjo.31643. Epub 2018 Oct 31.

Clinical Features and Surgical Results in Harada-Ito Surgery Patients.

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Gülhane Training and Research Hospital, Ophthalmology Clinic, Ankara, Turkey.
Batıgöz Hospital, Ophthalmology Clinic, İstanbul, Turkey.


Symptomatic excyclotorsion is an important clinical problem, especially in acquired superior oblique muscle palsy. Excyclotorsion can disrupt the fusion and cause torsional diplopia. Harada-Ito surgery (HI) is a widely used method for treating excyclotorsions. This method relieves the torsional diplopia by increasing the effect of the incyclotorsion. In this study, we aimed to report the clinical features of patients with torsional diplopia due to acquired trochlear nerve palsy and the results of HI surgery in these patients.


Harada-Ito; excyclotorsion; trochlear nerve; Superior oblique muscle palsy

Conflict of interest statement

Conflict of Interest: No conflict of interest was declared by the authors.

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