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prism strabismus

Harindersingh Sethi, Mayuresh Naik, Mukesh Joshi
The measurement of the amount and nature of deviation is the essence of diagnostic workup of a patient with strabismus and also has important therapeutic implications while planning the amount of surgery or prescribing therapeutic prisms. Although Krimsky test is a useful method, it cannot be used to measure deviation in patients with scarred and irregular cornea with an anechoic posterior segment making it difficult to see the corneal reflex. We hereby take the opportunity to present a modification of the original Krimsky test which is extremely helpful in determining the deviation in patients with irregular opaque corneas...
November 8, 2016: International Ophthalmology
Mythri Pullela, Brittany A Degler, David K Coats, Vallabh E Das
Purpose: Strabismus correction surgery is well documented in both the literature and practice with varying levels of success and permanence. Our goal was to characterize longitudinal changes in eye alignment and eye movements following strabismus correction surgery in a monkey model for developmental strabismus. Methods: We studied two juvenile rhesus monkeys with exotropia previously induced via an optical prism-rearing paradigm in infancy. Eye misalignment was corrected via a resection-recession surgery of the horizontal rectus muscles of one eye...
November 1, 2016: Investigative Ophthalmology & Visual Science
Kadriye Erkan Turan, Hande Taylan Şekeroğlu, Emin Cumhur Şener, Ali Şefik Sanaç
OBJECTIVES: To investigate the outcomes of secondary sensory strabismus surgery and to discuss the effect of visual acuity on success. MATERIALS AND METHODS: The medical records of patients with sensory strabismus who underwent recession-resection on the eye with vision loss were reviewed. Only patients with visual acuity of ≤0.2 in the operated eye were enrolled. Data including age at surgery, visual acuity, etiology of vision loss, preoperative and postoperative deviations, follow-up duration, and surgical outcomes were recorded...
December 2015: Turkish Journal of Ophthalmology
Zhale Rajavi, Ali Lashgari, Hamideh Sabbaghi, Narges Behradfar, Mehdi Yaseri
PURPOSE: To determine the incidence and related risk factors of reoperation among patients with infantile exotropia who were operated on at Imam Hossein Medical Center, Tehran, Iran, from 2001 to 2015. METHODS: In this study, 82 children (55 girls and 27 boys) with infantile exotropia were divided into two groups 3 months after their first operation: children with horizontal deviation of 10 prism diopters (PD) or less (n = 64; success group) and those with horizontal deviation greater than 10 PD (n = 18; failure group)...
October 25, 2016: Journal of Pediatric Ophthalmology and Strabismus
Pilar S Merino, Rebeca E Vera, Laura G Mariñas, Pilar S Gómez de Liaño, Jose V Escribano
PURPOSE: To study the types of acquired restrictive strabismus treated in a tertiary hospital and the outcome of treatment with botulinum toxin. METHODS: We performed a 10-year retrospective study of patients with restrictive strabismus aged ≥18 years who were treated with botulinum toxin. Treatment was considered successful if the final vertical deviation was ≤5 PD, horizontal deviation ≤10 PD, with no head turn or diplopia. RESULTS: We included 27 cases (mean age, 61...
October 19, 2016: Journal of Optometry
Xi Wang, Bingjie Chen, Longqian Liu
PURPOSE: To report a patient with cyclic esotropia with a high accommodative convergence to accommodation (AC/A) ratio after surgical correction of intermittent exotropia who was found to have bilateral anomalous medial rectus muscle insertion sites. METHOD: A 5-year-old girl developed intermittent esotropia on alternating days after undergoing bilateral lateral rectus recessions for correction of intermittent exotropia. Alternate prism and cover measurement of ocular alignment and binocular function was assessed on consecutive days...
September 15, 2016: International Ophthalmology
Eric Y Kim, Gill Roper-Hall, Oscar A Cruz
PURPOSE: To report one surgeon's experiences with bilateral lateral rectus resections in dysthyroid ophthalmopathy patients with residual esotropia after initial bilateral medial rectus recession. DESIGN: Retrospective interventional case series evaluating outcomes. METHODS: Medical records for patients with dysthyroid ophthalmopathy who underwent bilateral lateral rectus resections for persistent esotropia by a single surgeon from June 2012 to June 2015 were retrospectively reviewed...
August 30, 2016: American Journal of Ophthalmology
Kevin E Houston, A M Barrett
PURPOSE: Patching for double vision is a common palliative treatment for head-trauma patients with acquired strabismus when prisms are not feasible. METHODS: We review literature on spatial neglect and discuss possible effects of monocular occlusion on spatial attention. RESULTS: Patching the left eye has been shown to worsen spatial judgments in some brain-injured patients with left neglect by inhibiting the right superior colliculus further impairing contralateral leftward orienting (the Sprague Effect)...
August 30, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Priyanka Singh, Perumalsamy Vijayalakshmi, Shashikant Shetty, Priyanka Vora, Suresh Kalwaniya
PURPOSE: To study the binocular alignment and ocular motility in patients with large-angle esotropia due to sixth nerve palsy treated with double augmented vertical recti transposition. METHODS: This was a prospective interventional study. Fifteen patients with non-resolving sixth nerve palsy who underwent surgical correction were included in the study. Fourteen patients also underwent an additional medial rectus recession. Two patients with an associated small vertical deviation had a selective augmentation of one vertical rectus muscle...
August 18, 2016: Journal of Pediatric Ophthalmology and Strabismus
Pinar Bingol Kiziltunc, Huban Atilla, Feyza Çalış, Cem Alay
PURPOSE: Surgery for strabismus associated with neurological impairment is assumed to have unsatisfactory results in comparison with other strabismus cases. The aim of this study is to compare the surgical success rates of infantile esotropia (IE) and strabismus associated with neurological impairment. METHODS: The records of 103 patients that received operations for IE and strabismus associated with neurological impairment between January 1994 and May 2014 were reviewed retrospectively...
September 2016: Strabismus
Michela Fresina, Giuseppe Giannaccare, Piera Versura, Emilio C Campos
INTRODUCTION: Acute acquired distance esotropia (AADE) is a poorly understood moderate-angle strabismus, affecting young adult myopes and determining bothersome diplopia. Symptoms can be intermittent in the early stages, becoming constant in long-lasting disease. Symptomatic therapy includes prism correction, while surgery is the only curative treatment. However, the latter is affected by high rate of symptoms recurrence with the frequent need for reoperation. HYPOTHESIS: We hypothesize that AADE could be caused by the increase of the accommodative demand, often secondary to a myopic overcorrection...
September 2016: Medical Hypotheses
M Gräf, B Lorenz
The major goal of extraocular muscle surgery for nystagmus is to reduce the abnormal head turn (AHT) which is caused by an eccentric null zone of the nystagmus. Shifting the null zone to the primary gaze position will eliminate the AHT. The Kestenbaum procedure consists of bilateral recession of the yoke muscles opposite to the AHT, combined with bilateral resection or plication of their antagonists. The Anderson procedure is confined to bilateral recession of the yoke muscles and is therefore less invasive...
August 10, 2016: Klinische Monatsblätter Für Augenheilkunde
Fiona Lee Min Chew, Bhambi Uellyn Gesite-de Leon, Boon Long Quah
AIM: To assess strabismus control and motor ocular alignment for basic exotropia surgery at 5y follow-up. METHODS: The medical records of 80 consecutive patients aged less than 17 years of age, who underwent surgery for basic exotropia by a single surgeon between years 2000 to 2009 and completed a minimum of 5y follow-up post-operatively were reviewed. Pre- and post-operative characteristics were documented at 1wk, 6mo, 1, 3 and 5y follow-up. Subjects at 5-year follow-up were assigned to the success group if they had a post-operative angle of deviation within 10 prism diopters of exotropia or within 5 prism diopters of esotropia for distance on prism cover test, and had moderate to good strabismus control...
2016: International Journal of Ophthalmology
Kadriye Erkan Turan, Hande Taylan Sekeroglu, Sevilay Karahan, Ali Sefik Sanac
The purpose of this study was to evaluate the reliability of the fixation preference testing with 10 and 20 diopter prisms ((Δ)) in children without strabismus in order to extrapolate its utility to preverbal children and to determine interexaminer agreement. Fourty children (24 girls, 16 boys) aged between 5 and 16 years with normal ophthalmological examination except refractive errors were included in the study. The visual acuity, refractive errors, and orthoptic findings were recorded. The base-down prism fixation test was performed by two experienced examiners with 10(Δ) and 20(Δ)...
August 6, 2016: International Ophthalmology
Daniel B Rootman, Shani Golan, Peter Pavlovich, Jack Rootman
INTRODUCTION: Surgical rehabilitation of thyroid orbitopathy involves reducing proptosis, treating strabismus, lengthening the eyelids, and managing aesthetic changes. Not all are necessary in each patient; however, they often are. The current investigation intends to describe postdecompression changes that may influence the staging of these procedures. METHODS: In this retrospective cohort study, records of 169 patients who underwent orbital decompression between 1983 and 2001 were reviewed...
August 1, 2016: Ophthalmic Plastic and Reconstructive Surgery
Dayane Cristine Issaho, Serena Xiaohong Wang, Denise de Freitas, David Robert Weakley
PURPOSE: To evaluate factors associated with surgical success in bilateral medial rectus recessions in infantile esotropia. METHODS: The results of 97 patients with infantile esotropia undergoing surgical correction from January 2010 through December 2013 at Children's Medical Center of Dallas were reviewed. Multivariate logistic regression analysis of risk factors for success and evaluation of the relationship of surgical responses to baseline characteristics were performed...
September 1, 2016: Journal of Pediatric Ophthalmology and Strabismus
Ji-Sun Paik, Suk-Woo Yang, Shin Hae Park
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 hyperthyroidism. Asymmetric enlargement of the inferior and medial rectus muscles was demonstrated in her left eye on computed tomography, and was compatible with dysthyroid ophthalmopathy...
2016: BMC Ophthalmology
Hossein Ziaei, Marzieh Katibeh, Shadin Mohammadi, Mahbobeh Mirzaei, Hamid-Reza Moein, Bahareh Kheiri, Shoreh Taghaddos, Zhale Rajavi
PURPOSE: To assess quality of life (QOL) in children undergoing strabismus surgery. METHODS: This prospective cohort study included 87 children (including 41 boys, 47.1%) with mean age of 8.7 ± 4.1 years at three academic eye hospitals in Tehran. A modified version of the RAND Health Insurance Study QOL questionnaire was filled based on interviews with parents before and three months after surgery. The questionnaire consisted of 36 Likert scale items ranging in score from 0 to 100, with higher scores representing better function...
April 2016: Journal of Ophthalmic & Vision Research
Suk-Gyu Ha, Kun-Hoo Na, Il-Joo Kweon, Young-Woo Suh, Seung-Hyun Kim
PURPOSE: To investigate the clinical effects of head-mounted display on the refractive error and oculomotor system in normal adolescents. METHODS: Sixty volunteers (age: 13 to 18 years) watched a three-dimensional movie and virtual reality application of head-mounted display for 30 minutes. The refractive error (diopters [D]), angle of deviation (prism diopters [PD]) at distance (6 m) and near (33 cm), near point of accommodation, and stereoacuity were measured before, immediately after, and 10 minutes after watching the head-mounted display...
July 1, 2016: Journal of Pediatric Ophthalmology and Strabismus
Ibrahim Erbagci, Veysi Öner, Erol Coskun, Seydi Okumus
PURPOSE: To describe a new surgical modified procedure in patients with chronic total oculomotor nerve palsy and to evaluate the results of this procedure. METHODS: Eight eyes of 6 consecutive patients who underwent strabismus surgery due to chronic total oculomotor nerve palsy were enrolled in the study. The lateral rectus muscle was split into two halves and disinserted from the sclera. The upper half of the muscle was passed under the superior rectus muscle and the inferior half of the muscle was passed under the inferior rectus muscle...
May 1, 2016: Journal of Pediatric Ophthalmology and Strabismus
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