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prism strabismus

Priyanka Kumar, Darren L Hoover, Scott R Lambert
PURPOSE: To describe outcomes after partial scleral buckle removal at the time of strabismus surgery. METHODS: The medical records of consecutive patients with symptomatic diplopia who underwent strabismus surgery after scleral buckling by two surgeons were reviewed retrospectively. All patients underwent forced duction testing and had a segment of the scleral buckle removed intraoperatively. Pre- and postoperative ocular motility and alignment were compared. The outcome was considered successful if residual horizontal deviation was ≤8Δ , vertical deviation ≤2Δ , and cyclotropia <5°...
January 6, 2019: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
Matthew Josephson, Stephen A Mathias
INTRODUCTION: Bupivicaine has been shown to stimulate ocular muscle structure and length after injection into ocular muscles. Bupivicaine 0.75% has been utilized in the treatment of strabismus to alter ocular alignment by strengthening an ocular muscle. This study is designed to report 5-year follow-up outcomes after bupivicaine injection. METHODS: A retrospective chart review of all bupivicaine treated strabismus patients with symptomatic intermittent exotropia of the convergence insufficiency type (CIXT) from 2009 through 2016...
January 7, 2019: Journal of binocular vision and ocular motility
Judith B Lavrich, Naomie J K Warner, Alexander J Hauschild, Avrey Thau, Barry Wasserman, Caroline DeBenedictis, Bruce Schnall, Donelson Manley, Kammi Gunton, Sneha Padidam, Jeffrey E Landy
BACKGROUND: Convergence insufficiency (CI) is not an uncommon entity but seems to be an ill-defined diagnosis that incorporates many near-vision symptoms. The current literature often varies in its criteria for diagnosis. Without a clear definition and standardization of the clinical examination, there is the potential for misdiagnosis and/or the inclusion of other diagnoses as CI. The purpose of this study was to assess the uniformity of diagnostic criteria in a well-defined practice environment...
January 3, 2019: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
Pilar Merino, Carlota Gutierrez, Pilar Gómez de Liaño, Marcela Srur
PURPOSE: To report long-term outcomes of strabismus surgery for treatment of third nerve palsy. METHODS: We performed a 15-year retrospective study of patients who had undergone surgery. We analyzed preoperative mean deviation (at 6 months, 1 year after surgery, and at the end of follow-up), type of surgery, and factors predicting outcomes. A final deviation <10 prism diopters (pd) was considered a good esthetic outcome, and no diplopia in the primary position at the end of follow-up was considered a good functional outcome...
December 29, 2018: Journal of Optometry
P Merino Sanz, I Del Cerro Pérez, G Alan Peinado, P Gómez de Liaño Sánchez
OBJECTIVE: To present a report of the ocular motility disorders, treatment and outcomes of myasthenia gravis (MG). MATERIAL AND METHOD: A retrospective study was performed on the data of patients with MG. An evaluation was made using mean age, gender, initial diagnosis, ocular deviation, time of onset of clinical characteristics, treatment and results. Resolution of diplopia and/or ocular deviation in primary and reading gaze was considered a good outcome at the end of follow-up...
December 20, 2018: Archivos de la Sociedad Española de Oftalmología
Ju-Yeun Lee, Hyo Jeong Kim, Kyung-Ah Park, Shin Yeop Oh, Sei Yeul Oh
BACKGROUND: To compare clinical characteristics according to the laterality of objective ocular torsion in patients with unilateral superior oblique palsy (SOP). METHODS: This retrospective study included all patients with a diagnosis of unilateral SOP. They were classified into subgroups according to correspondence between the paretic eye and the extorted eye using fundus photography. Ocular alignment and muscle action were tested by the prism and alternate cover tests and 4-scale movement measure...
December 17, 2018: BMC Ophthalmology
Milad Modabber, Andrei F Dan, Razek G Coussa, Michael Flanders
OBJECTIVE: To characterize the ocular response to retrobulbar anaesthesia and to evaluate the efficacy of retrobulbar anaesthesia for adjustable strabismus surgery in adults. DESIGN: Prospective observational study. PARTICIPANTS: Adult patients undergoing adjustable strabismus surgery under retrobulbar anaesthesia. METHODS: Surgical success was defined by ocular alignment within 10 prism diopters (PD) of orthotropia for horizontal rectus surgery and within 5 PD for vertical rectus surgery...
December 2018: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
Ahmet Murat Sarici, Burak Mergen, Velittin Oguz, Cezmi Dogan
BACKGROUND: Previous techniques resulted with low rates of successful fusion after the surgeries and high necessity of additional surgeries in the treatment of thyroid orbitopathy related strabismus. In this study, reviewing the results of our patients who had surgical correction with relaxed muscle positioning technique due to thyroid orbitopathy related strabismus to evaluate the effectiveness of the surgery was aimed. METHODS: The medical records of 8 patients who had surgical correction with intraoperative relaxed muscle positioning (IRMP) technique were studied retrospectively...
November 23, 2018: BMC Ophthalmology
Xue Li, Cheng Yang, Guanrong Zhang, Yan Zhang, Jianqing Lan, Hang Chu, Juan Li, Wenjuan Xie, Shujun Wang, Brenda K Wiederhold, Mark Wiederhold, Li Yan, Jin Zeng
We evaluated the effect of dichoptic visual training based on a unique virtual reality (VR) platform mounted display in patients with intermittent exotropia (IXT). A total of 25 IXT patients (8 men, 17 women) with a mean age of 12.3 years (range, 5-39 year) were recruited. The Hirschberg test, prism and alternate cover testing (with accommodative targets for fixation at 33 cm in all patients), perceptual eye position (PEP), and stereopsis were evaluated after 1, 3, and 6 months of dichoptic visual neuroplasticity training with a computer-controlled perceptual examination evaluation system...
November 17, 2018: Cyberpsychology, Behavior and Social Networking
Xiaohe Yan, Xiaoming Lin
PURPOSE: To examine stereopsis in patients with comitant horizontal strabismus who had normal vision and were stereoblind following the strabismus surgery. METHODS: Twenty patients with primary comitant horizontal strabismus and normal corrected visual acuity were included in this study. The stereoacuity was quantitatively measured by the random dot butterfly stereotest, the Randot Preschool Stereoacuity Test (Stereo Optical, Inc., Chicago, IL), and synoptophore...
November 19, 2018: Journal of Pediatric Ophthalmology and Strabismus
Mohammad Reza Akbari, Samira Sadrkhanlou, Arash Mirmohammadsadeghi
PURPOSE: To determine the efficacy of isolated inferior oblique myectomy on hypertropia in primary position, side gazes, and tilts, and its effect on comitancy and abnormal head posture in unilateral superior oblique palsy. METHODS: Thirty-nine patients with unilateral superior oblique palsy who had inferior oblique overaction underwent inferior oblique myectomy. The hypertropia was measured in primary position, side gazes, and tilts preoperatively and postoperatively...
October 26, 2018: Journal of Pediatric Ophthalmology and Strabismus
Abbas Bagheri, Mohadeseh Feizi, Ramin Sahebghalam, Shahin Yazdani
PURPOSE: To describe a new surgical technique for the treatment of complete third nerve palsy. METHODS: This study included patients with chronic complete third nerve palsy. The lateral rectus muscle was split, followed by disinsertion of the superior and inferior halves, which were passed between the sclera and superior and inferior rectus muscles, respectively. Then the medial rectus muscle was sutured as posteriorly as possible from its insertion and cut. Next, the distal stump of the medial rectus muscle was split into two halves and united with the superior and inferior halves of the lateral rectus muscle...
October 26, 2018: Journal of Pediatric Ophthalmology and Strabismus
Rehab R Kassem
PURPOSE: To determine the possible predictors of the motor outcome after corrective surgery for acquired comitant esotropia. METHODS: The study included 40 patients with acquired comitant esotropia. After evaluation of the visual, sensory, and motor status; cycloplegic refraction; fundus examination; and spectacle prescription, all patients underwent corrective strabismus surgery. A successful motor outcome was defined as 0 to 10 prism diopters of horizontal tropia...
October 26, 2018: European Journal of Ophthalmology
Shin Yeop Oh, Kyung-Ah Park, Sei Yeul Oh
PURPOSE: We investigated the clinical and demographic factors associated with horizontal muscle reoperation due to recurrent esotropia or consecutive exotropia in infantile esotropia. METHODS: One hundred forty-two patients with infantile esotropia who received at least 3 years of follow-up after their first surgery between January 2004 and December 2012 were included in this study. The patients were divided into 2 groups according to the reoperation, and the reoperation group was further subdivided into 2 groups [recurrent esotropia (RET) and consecutive exotropia (CXT)]...
November 2018: Japanese Journal of Ophthalmology
Alon Zahavi, Ronit Friling, Yonina Ron, Miriam Ehrenberg, Yoav Nahum, Moshe Snir
PURPOSE: To evaluate changes in ocular motility deviation with cycloplegic eye drop examination compared to the prism adaptation test in patients with strabismus. METHODS: The medical charts were reviewed of all patients who underwent primary strabismus surgery in our center from December 2013 to July 2015. Data collected included demographics, medical history, and findings on pre-operative ophthalmic/orthoptic examination. Ocular motility deviation was measured before instillation of cycloplegic eye drops, immediately after maximal dilation (end point), and 10 and 20 min later...
October 4, 2018: European Journal of Ophthalmology
Rannveig Linda Thorisdottir, Jonas Blohmé, Malin Malmsjö
PURPOSE: To examine the outcome of the use of donor sclera as spacer material in complicated cases of strabismus surgery. METHODS: A retrospective cohort study on patients with complicated thyroid-associated ophthalmopathy (TAO) (n = 42) or congenital strabismus (n = 75). Patients underwent strabismus surgery during 1994-2014. The surgical results were evaluated in terms of the reduction in the angle of deviation, the need for re-operation, complications and patient satisfaction...
October 3, 2018: Acta Ophthalmologica
Apatsa Lekskul, Tatha Supakitvilekarn, Tanyatuth Padungkiatsagul
Purpose: To study the surgical outcomes of intended undercorrection on adult intermittent exotropia (X(T)) performed to avoid postopertively overcorrected diplopia. Patients and methods: A retrospective chart review was conducted for adult patients (age ≥18 years) with X(T) ≥15 prism diopter (PD) who underwent strabismus surgery by a single surgeon. Inclusion criteria were 1) corrected VA ≥20/40 in either eye; 2) monocular occlusion at least 30 minutes before deviation measurement; 3) difference of ≤10 PD between near and distance deviation; 4) absence of significant A or V pattern or vertical deviation; 5) lateral rectus recession and medial rectus resection procedure were performed unilaterally; and 6) intended surgical number for deviation correction was aimed at 5 PD undercorrection...
2018: Clinical Ophthalmology
Hajar Farvardin, Majid Farvardin, Samaneh Koohestani
This study was performed to describe lateral rectus myectomy and maximal medial rectus resection for correction of eye deviation in complete third cranial nerve palsy. A retrospective review of thirteen patients (fourteen eyes) with complete third cranial nerve palsy, who underwent lateral rectus myectomy and maximal medial rectus resection, was performed. These procedures were combined with superior oblique tendon transposition in nine patients with a large angle of exotropia (more than 60 prism diopters [∆]), or significant hypotropia (more than 5 ∆)...
2018: Medical Hypothesis, Discovery and Innovation in Ophthalmology
Zhale Rajavi, Mohammad Gozin, Hamideh Sabbaghi, Narges Behradfar, Bahareh Kheiri, Mohmmad Faghihi
This study was performed to determine the surgical outcomes and the related risk factors of second operation in patients with residual horizontal deviations. In this interventional case series study, a total of 119 patients with a history of reoperation were included (39 exotropia and 80 esotropia). Cases with consecutive strabismus, muscular palsy, systemic disease, lack of ocular fixation, and those, who had vertical deviation and Dissociated Vertical Deviation (DVD)>5 Prism Diopters (pd) were excluded...
2018: Medical Hypothesis, Discovery and Innovation in Ophthalmology
Kenn Freedman, Coby Ray, Declan Kirk
PURPOSE: To critically evaluate the traditional standards for holding single prisms in measuring strabismus with the specific goal being to increase the overall accuracy of clinical measurements. DESIGN: Reliability and validity analysis METHODS: Using an analysis involving geometric optics, the effective prism power (EPP), measured in prism diopters (PD) was calculated for glass and acrylic prisms and was the main outcome measure. These results were also validated using optical bench measurements...
September 18, 2018: American Journal of Ophthalmology
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