To evaluate the long-term surgical outcomes of anterior transposition of the inferior oblique muscle (ATIO) in the treatment of vertical deviations resulting from superior oblique palsy (SOP). We retrospectively studied seven consecutive patients who had undergone ATIO for the treatment of SOP. A follow-up of at least five years after the operation was required to be included in the study. In r...

Dissociated vertical deviation (DVD), first described in 1894, is commonly encountered in the infantile strabismus syndrome. The vertical position of the eyes in DVD depends on fixation effort and luminance differences. The neural mechanism behind DVD is still not clear. Visual and oculomotor pathways in the brainstem are phylogenetically old pathways which in origin are basically monocular: th...

PURPOSE To report a novel method for measuring the vertical tilt angle of the optic nerve (ON) head and to investigate the associated factors. DESIGN Cross-sectional diagnostic study. METHODS One hundred and twelve normal, glaucomatous, and glaucoma suspect eyes (99 patients) were enrolled in this study. Subjects underwent a full eye examination, biometry, and spectral-domain optical cohere...

PURPOSE The authors established a surgical treatment for excyclovertical strabismus in which either the inferior rectus muscle or the superior rectus muscle was transposed diagonally. The effects and the safety of the procedure, called skew transposition, were studied. METHODS Eighteen operations using local anesthesia with eye drops were performed on 17 cases, including 10 with superior obli...

BACKGROUND Several inferior oblique (IO) weakening methods exist for correction of superior oblique palsy (SOP). A previously reported method involved recession and anteriorization according to IO overaction (IOOA) grade, which might be subjective and cause upgaze limitation and opposite vertical strabismus. Therefore, this study attempted to examine the efficacy of modified graded recession an...

BACKGROUND Cyclic strabismus is a very rare condition of ocular motility characterized by alternating strabismus and orthotropia. We report a patient with a 48-h cycle of vertical deviation associated with dysthyroid ophthalmopathy that spontaneously resolved. CASE PRESENTATION A 40-year-old woman experienced sudden onset vertical double vision. She had already been diagnosed with hyperthyroi...