The oculocardiac reflex was quantitatively studied in 15 patients with strabismus. The reflex was observed in all patients when the medial rectus and inferior oblique muscles were stretched; the medial rectus muscle had a lower threshold than the inferior oblique. Bradycardia was evoked in 7 of the 15 patients when the lateral rectus was tractioned with tensions of 50 g and 600 g. The oculocard...

is only one question, where to make the operation, which part of the ciliary body shall we detach ? We decided, referring to the intact part of the iris, at the insertion of the inferior rectus muscles. Next day the pressure was subnormal (12 Hg mm.) and for half a year there has been no alteration in the pressure. As far as we are concerned we would propose in cases of genuine iris-atrophy com...

PURPOSE To report a case of granular cell tumor as a rare orbital pathology. CASE REPORT A 50-year-old female presented with a 4-year history of diplopia, right ocular displacement and a firm nontender mass in her right lower lid. Computed tomography (CT) scan of the orbit disclosed a well-defined mass in the right inferior orbit involving the right inferior rectus. Subtotal excision of the m...

PURPOSE This study was undertaken to investigate evidence for a connective tissue pulley constraining the path of the inferior oblique (IO) muscle. METHODS From magnetic resonance images, the cross-sectional area, path, and orbital relationships of the human IO were determined in multiple gaze positions. Rectus pulleys were directly imaged with intravenous gadodiamide contrast. Images were co...

W e read the published article entitled " An anatomical study of the inferior oblique muscle with emphasis on its nerve entry " by Kumar et al. (1) This study described the entry of the inferior division of the oculomotor nerve to the inferior oblique muscle and the topographical anatomy of the muscle. We would like to take this opportunity to share some important scientific facts. We agree wit...

The conventional exposure of a horizontal rectus muscle is through conjunctival and Tenon's capsule incisions directly over the muscle. This results in a visible scar and in some patients is conspicuously unattractive. Therefore, a surgical method that hides the scar behind the eyelid should be welcomed by both the surgeon and patient. To accomplish this objective the medial and lateral rectus ...

INTRODUCTION Endoscopic sinus surgery can result in serious extraocular muscle dysfunction. The medial rectus muscle is more frequently affected than other extraocular muscles. METHODS A transconjunctival subperiosteal medial orbitotomy was successful in retrieving a partially extirpated medial rectus muscle after endoscopic sinus surgery. RESULTS A previous attempt to localize this muscle ...

PURPOSE Extraocular muscle (EOM) paths are constrained by connective tissue pulleys serving as functional origins. The quantitative structural features of pulleys and their intercouplings and orbital suspensions remain undetermined. This study was designed to quantify the composition of EOM pulleys and suspensory tissues. METHODS Five human orbits, ages 33 weeks gestation to 93 years, were im...

PURPOSE High-resolution, multipositional magnetic resonance imaging (MRI) was used to demonstrate extraocular muscles (EOMs) and associated motor nerves in Duane retraction syndrome (DRS) linked to the DURS2 locus on chromosome 2. METHODS Five male and three female affected members of two autosomal dominant DURS2 pedigrees were enrolled in the study. Coronal T(1)-weighted MRI of the orbits wa...