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prism strabismus

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https://www.readbyqxmd.com/read/28302533/strabismus-measurements-in-adults-before-and-after-pupil-dilation
#1
Sean S Rivera, Michael S Lee, Scott Lunos, Jill S Anderson, Erick D Bothun
PURPOSE: To determine the effect of dilating drops on strabismus measurements in adults. DESIGN: Prospective cohort study METHODS: Patients age 18 and older with strabismus underwent a standard evaluation of ocular motility, stereopsis, and ocular alignment with alternate prism cover test by a certified orthoptist. After pupil dilation with 2.5% phenylephrine and 1% tropicamide, ocular alignment was re-measured in primary gaze at 6 meters, at 1/3 meter and at 1/3 meter with a +3...
March 13, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28292276/effect-of-modified-graded-recession-and-anteriorization-on-unilateral-superior-oblique-palsy-a-retrospective-study
#2
Dong Cheol Lee, Se Youp Lee
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 and anteriorization of the IO muscle in correction of unilateral SOP without resulting in upgaze limitation or opposite vertical strabismus...
March 14, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28257132/the-role-of-rectus-muscle-myectomy-in-the-management-of-large-angle-strabismus-for-graves-ophthalmopathy
#3
S L Liao, Y-H Wei, A Y-C Chuang
PurposeRetrospective noncomparative case series to investigate the role of rectus muscle myectomy for the treatment of large-angle strabismus in patients with Graves' ophthalmopathy.Patients and methodsData from 47 consecutive patients with Graves' ophthalmopathy who underwent complete myectomy for large-angle strabismus (strabismus greater than 25 prism diopters (PDs)) were collected retrospectively. Pre- and postoperative deviations in primary and reading position were measured in PDs. Postoperative deviation of <5 diopters in primary gaze and functional binocular vision in central 30° field were considered as successful surgical outcomes...
March 3, 2017: Eye
https://www.readbyqxmd.com/read/28253424/botulinum-toxin-for-the-treatment-of-strabismus
#4
REVIEW
Fiona J Rowe, Carmel P Noonan
BACKGROUND: The use of botulinum toxin as an investigative and treatment modality for strabismus is well reported in the medical literature. However, it is unclear how effective it is in comparison to other treatment options for strabismus. OBJECTIVES: The primary objective was to examine the efficacy of botulinum toxin therapy in the treatment of strabismus compared with alternative conservative or surgical treatment options. This review sought to ascertain those types of strabismus that particularly benefit from the use of botulinum toxin as a treatment option (such as small angle strabismus or strabismus with binocular potential, i...
March 2, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28237148/slipped-extraocular-muscles-characteristics-and-surgical-outcomes
#5
Christiane Al-Haddad, Maamoun Abdul Fattah
OBJECTIVE: To study the frequency and characteristics of slipped extraocular muscles after strabismus surgery and report the postoperative outcomes longitudinally. DESIGN: Retrospective chart review. PARTICIPANTS: Electronic medical records of 493 patients who underwent strabismus surgery and were found to have a slipped muscle intraoperatively were reviewed. METHODS: Records were retrieved and operative reports were screened for the presence of slipped muscles...
February 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28229342/the-prevalence-and-types-of-strabismus-and-average-of-stereopsis-in-japanese-adults
#6
Toshiaki Goseki, Hitoshi Ishikawa
PURPOSE: Few studies report the prevalence and types of strabismus, or average of stereopsis in Japanese adults. We performed ophthalmological evaluation including motility and stereopsis during medical examinations at cooperative companies. METHODS: We studies 1214 volunteers. The average age was 41.2 ± 12.6 (range 20-86) years. Examinations were carried out using their customary eyewear, evaluating alternate prism cover test (APCT), and Titmus stereo test (TST)...
February 22, 2017: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28220248/-prism-adaptation-test-before-strabismus-surgery-results-of-a-survey-and-literature-review
#7
U Pichler, M Rohleder, O Ehrt
BACKGROUND: Variable preoperative deviations and compensatory mechanisms may cause wrong dosage of strabismus surgery and result in over- or undercorrection. A long-lasting prism adaptation test (PAT) before surgery is supposed to reduce those difficulties and to improve the postoperative results. To date, the use of prism adaptation before surgery has not been systematically examined. METHODS: A total of 15 strabismologists and 28 orthoptists in Austria were interviewed about their approach to prism adaptation in 9 types of strabismus...
February 20, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28182149/anterior-segment-ischemia-after-strabismus-surgery
#8
Emine Seyhan Göçmen, Yonca Atalay, Özlem Evren Kemer, Hikmet Yavuz Sarıkatipoğlu
A 46-year-old male patient was referred to our clinic with complaints of diplopia and esotropia in his right eye that developed after a car accident. The patient had right esotropia in primary position and abduction of the right eye was totally limited. Primary deviation was over 40 prism diopters at near and distance. The patient was diagnosed with sixth nerve palsy and 18 months after trauma, he underwent right medial rectus muscle recession. Ten months after the first operation, full-thickness tendon transposition of the superior and inferior rectus muscles (with Foster suture) was performed...
January 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28092393/surgical-treatment-of-adult-onset-esotropia-characteristics-and-outcomes
#9
Sara F Grace, Kara M Cavuoto, Wei Shi, Hilda Capo
PURPOSE: To describe the characteristics of the strabismus, surgical management, and outcomes of patients who underwent surgery for adult-onset esotropia. METHODS: This was a retrospective case study of patients at an academic tertiary referral center who underwent surgical treatment of esotropia acquired at or after age 18 years. Primary outcome measures were resolution of diplopia in primary position and a deviation of 10 prism diopters or less in primary gaze...
January 13, 2017: Journal of Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28057455/comparison-of-botulinum-toxin-with-surgery-for-the-treatment-of-acute-onset-comitant-esotropia-in-children
#10
Michael J Wan, Iason S Mantagos, Ankoor S Shah, Melanie Kazlas, David G Hunter
PURPOSE: To determine whether botulinum toxin is as effective as strabismus surgery in the treatment of acute-onset, comitant esotropia in children. DESIGN: Retrospective, non-randomized, comparative clinical study. METHODS: Setting: Tertiary care pediatric hospital. STUDY POPULATION: 49 children with acute-onset, comitant esotropia. INTERVENTION: Treatment with either botulinum toxin ("chemodenervation group") or standard incisional strabismus surgery ("surgery group")...
January 2, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28031397/electrical-stimulation-of-superior-colliculus-affects-strabismus-angle-in-monkey-models-for-strabismus
#11
Suraj Upadhyaya, Hui Meng, Vallabh E Das
Disruption of binocular vision during the critical period for development leads to eye misalignment in humans and in monkey models. We have previously suggested that disruption within a vergence circuit could be the neural basis for strabismus. Electrical stimulation in the rostral superior colliculus (rSC) leads to vergence eye movements in normal monkeys. Therefore, the purpose of this study was to investigate the effect of SC stimulation on eye misalignment in strabismic monkeys. Electrical stimulation was delivered to 51 sites in the intermediate and deep layers of the SC (400 Hz, 0...
March 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28018672/acute-acquired-comitant-esotropia-in-adults-is-it-neurologic-or-not
#12
Kadriye Erkan Turan, Tulay Kansu
Objectives. Acute acquired comitant esotropia (AACE) can be a diagnostic challenge for ophthalmologists and neurologists because of its association with neurological pathologies. Our study describes a series of adult patients with AACE of undetermined etiology. Methods. Data on the clinical findings of patients presented with AACE of undetermined etiology with a minimum follow-up of 1 year were retrieved from the medical records and the results analyzed. Results. A series of 9 esotropia cases (age range: 20-43 years) was reviewed...
2016: Journal of Ophthalmology
https://www.readbyqxmd.com/read/27977037/a-high-prevalence-of-exotropia-in-patients-with-duane-retraction-syndrome-in-a-tertiary-eye-care-center-in-south-india
#13
Manjushree Bhate, Virender Sachdeva, Ramesh Kekunnaya
PURPOSE: To determine the prevalence and clinical characteristics of patients with Duane retraction syndrome presenting with exotropia in a tertiary eye care center. METHODS: Medical records of 140 patients with Duane retraction syndrome and exotropia (of the total 441 patients with Duane retraction syndrome) seen from 2000 to 2009 were reviewed. Characteristics studied included age at presentation, gender, laterality, manifest primary position, abnormal head posture, ocular motility, and overshoots...
December 8, 2016: Journal of Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/27933481/fixation-preference-test-reliability-for-the-detection-of-amblyopia-in-patients-with-strabismus-and-interexaminer-agreement
#14
Kadriye Erkan Turan, Hande Taylan Sekeroglu, Sevilay Karahan, Ali Sefik Sanac
PURPOSE: The purpose of this study was to analyze the reliability of the fixation preference test (FPT) in the detection of amblyopia, and to determine interexaminer agreement. METHODS: Eighty patients whose visual acuity could be tested objectively and had a horizontal misalignment of more than 10 prism diopters were enrolled. The best corrected visual acuity (BCVA) and orthoptic findings were all recorded. Non-preferred eye in primary position and fixation preference grade were assessed independently by two masked experienced examiners...
December 8, 2016: International Ophthalmology
https://www.readbyqxmd.com/read/27826935/modified-krimsky-test-for-irregular-scarred-corneas
#15
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
https://www.readbyqxmd.com/read/27820877/longitudinal-evaluation-of-eye-misalignment-and-eye-movements-following-surgical-correction-of-strabismus-in-monkeys
#16
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
https://www.readbyqxmd.com/read/27800244/effect-of-visual-acuity-on-the-surgical-outcomes-of-secondary-sensory-strabismus
#17
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
https://www.readbyqxmd.com/read/27783093/the-incidence-of-reoperation-and-related-risk-factors-among-patients-with-infantile-exotropia
#18
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)...
January 1, 2017: Journal of Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/27771241/botulinum-toxin-for-treatment-of-restrictive-strabismus
#19
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
https://www.readbyqxmd.com/read/27628586/cyclic-esotropia-with-development-of-a-high-accommodative-convergence%C3%A2-to%C3%A2-accommodation-ratio-after-surgery-for-intermittent-exotropia
#20
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
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