Binocular Vision & Strabology Quarterly, Simms-Romano's

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PURPOSE: To evaluate the responsible pathophysiological mechanism in a 15 year old patient with acquired Browns Syndrome presenting with cyclic characteristics. METHODS: In addition to a full orthoptic assessment, magnetic resonance imaging of the orbit, corneal topography and computerized videokeratography data analysis during the diplopic period, during resolution and following betamethasone injection into the trochlear region were accomplished. RESULTS: The MRI scan demonstrated enlargement of the tendon trochlea complex that was similar during the diplopic episode and resolution...

PURPOSE: To compare and repeatedly measure cycloplegic refraction in a cross-section of children using retinoscopy and automated refraction. METHODS: A total of 560 children (corresponding to 1120 eyes) ranging in age from 3 to 10 years participated in the study. Each child underwent a comprehensive eye examination, which included table mounted autorefractor evaluation (Kowa KW-2000) and streak retinoscopy, both after cycloplegia with 1% cyclopentolate hydrochloride...

IMPORTANCE: The gold standard of vision screening is considered acuity testing, this article will compare the gold standard against new technology to provide more choices for pediatric vision screening programs. OBJECTIVE: To determine the reliability of recognition visual acuity screening performed by a lay screener compared to the plusoptiX A09 photoscreener for the detection of amblyopia risk factors. DESIGN: One lay screener received basic training in how to test monocular visual acuity using the 10 foot Patti Pics single crowded chart and the plusoptiX A09 photoscreener...

PURPOSE: To evaluate and compare the effect of four horizontal rectus muscle Tenotomy And Replacement (TAR) alone and in combination with recessions for strabismus, on visual function and eye movement records in patients with INS without AHP, and to compare these results. METHODS: This was a prospective interventional case series of 14 patients with INS with no AHP or eccentric null point. Patients underwent 4 horizontal eye muscle tenotomy and replacement (TAR) alone or 2 muscle TAR in combination with conventional bilateral horizontal muscle recession according to the presence and type of strabismus...

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Undiagnosed strabismus may result in serious, life-limiting conditions when undiagnosed and untreated.

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PURPOSE: To show conditions where a vertical deviation, an A- or a V-pattern or cyclotropia can appear after surgery on the horizontal rectus muscles, with or without oblique muscle surgery. Our purpose is also to show conditions when a vertical deviation can be anticipated before horizontal rectus muscle surgery and realignment of the ocular deviation. Finally, our purpose is to stress on some surgical precautions one should take to avoid such complications. CASE REPORTS: We report two cases who showed significant vertical deviations due to complications that followed surgical weakening procedures of the inferior oblique muscles...

PURPOSE: To investigate and report the clinical characteristics at initial presentation in patients who had Duane Syndrome, especially binocular vision and functional amblyopia. METHODS: The medical files of patients with Duane's syndrome were reviewed. The main outcome measures of the study were the initial clinical characteristics including amblyopia and associated risk factors including deficiences of binocular vision. RESULTS: The review identified 99 patients with Duane Syndrome...

PURPOSE: To compare the results of a medial rectus (MR) Y-split recession with those of a MR retroequatorial myopexy for the treatment of partially accommodative esotropia with convergence excess. METHODS: In this retrospective study, patients who underwent bilateral MR Y-split recession or bilateral MR retroequatorial myopexy for partially accommodative esotropia with convergence excess (accommodative convergence: accommodation ratios greater than 5 prism diopters:diopters) between March 2006 and January 2011 were included...

PURPOSE: To evaluate the surgical and functional results of slanted medial rectus resection for treatment intermittent exotropia of the convergence insufficiency type. METHODS: Fifteen patients with near vision asthenopia and intermittent exotropia of the convergence insufficiency type were included in this prospective study. The upper edge of the MR was resected more than the lower edge. Slanted bilateral or unilateral medial rectus resection was performed. The mean length of follow-up was 14...

INTRODUCTION: The effect of the unequal visual inputs in uniocular cataracts is addressed through the hypothesis that a marked inequality of the visual inputs will have an interference effect that will degrade the binocular vision relative to that of the better eye. We tested this hypothesis of reverse interference effect by both clinical and functional Magnetic Resonance Imaging assessments in an acute unilateral cataract patient. The patient was 63 year old woman who rapidly developed a dense sub-capsular cataract following steroid radio-chemotherapy treatment for breast cancer...

OBJECTIVE: To evaluate two cases of intermittent exotropia treated by vision therapy the efficacy of the treatment by complementing the clinical examination with a 3D videooculography to register and to evidence the potential applicability of this technology for such purpose. METHODS: We report the binocular alignment changes occurring after vision therapy in a woman of 36 years with an intermittent exotropia of 25 prism diopters at far and 18 PD at near and a child of 10 years with 8 PD of intermittent exotropia in primary position associated to 6 PD of left eye hypotropia...

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INTRODUCTION: Affordable, portable A-scan ultrasound technology is important to the pediatric or mission cataract surgeon. Some units (i.e.; Biopen) are no longer marketed and report poorly on atypically shaped eyes. METHODS: A clear plastic tube-housing was shaped to accept a USB-portable B-scan for supine immersion ultrasonography. RESULTS: With IRB approval and consent, 34 eye surgery subjects, aged 0.3 to 70 years, had both conventional contact A-scan compared with modified B-scan immersion measurements...

A 67 year old woman presented with her left eye fixed in adduction and infraduction. She had previous complicated strabismus surgery 18 years ago with a report of intraoperative loss of left medial rectus (MR) muscle (not retrieved at the time of surgery). An Orbital MRI of the left eye showed reattachment of the MR muscle to the globe and an axially enlarged globe associated with inferior displacement of the lateral rectus and nasal displacement of the superior rectus muscles. In ultrasonography the axial lengths were 24...

PURPOSE: To determine which factors are important in the development of secondary exotropia and the incidence of secondary exotropia occurring after a retroequatorial myopexy of the medial rectus muscle with recession in the treatment for partially accommodative esotropia associated with convergence excess. METHODS: In this retrospective study, the patients that underwent retroequatorial myopexy on both medial rectus muscles with recessions for partially accommodative esotropia associated with convergence excess were included...

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