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Strabismus

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https://www.readbyqxmd.com/read/30130446/processed-amniotic-membrane-for-conjunctival-reconstruction-in-complex-strabismus-surgery
#1
Sabine Naxer, Maren Horn, Michael Schittkowski
INTRODUCTION: In ophthalmology amniotic membrane is usually used for the treatment of corneal ulcerations and chemical burns of the ocular surface. Also, it is useful in the treatment of conjunctival defects. There are few publications on the long-term outcomes with the use of amniotic membrane to replace the conjunctiva. In our cases, we used it in patients with restrictive strabismus or conjunctival problems during or following complex eye muscle surgery. MATERIALS AND METHODS: In this retrospective case study, we reviewed the charts of the patients who had been treated with Ambio5® (IOP Inc...
August 21, 2018: Strabismus
https://www.readbyqxmd.com/read/30059649/global-and-regional-estimates-of-prevalence-of-amblyopia-a-systematic-review-and-meta-analysis
#2
Hassan Hashemi, Reza Pakzad, Abbasali Yekta, Parinaz Bostamzad, Mohamadreza Aghamirsalim, Sara Sardari, Mehrnaz Valadkhan, Mojgan Pakbin, Samira Heydarian, Mehdi Khabazkhoob
BACKGROUND: Amblyopia is one of the most important causes of vision impairment in the world, especially in children. Although its prevalence varies in different parts of the world, no study has evaluated its prevalence in different geographical regions comprehensively. The aim of the present study was to provide global and regional estimates of the prevalence of amblyopia in different age groups via a systematic search. METHODS: In this study, international databases, including Embase, Scopus, PubMed, Web of Science, and other relevant databases, were searched systematically to find articles on the prevalence of amblyopia in different age groups published in English...
July 30, 2018: Strabismus
https://www.readbyqxmd.com/read/30059643/surgical-outcome-of-a-new-modification-to-muscle-belly-union-surgery-in-heavy-eye-syndrome
#3
Mohammad Reza Akbari, Reza Bayat, Arash Mirmohammadsadeghi, Bahman Inanloo, Reza Mirshahi
OBJECTIVES: To report the clinical outcomes of a new modification to muscle belly union surgery in heavy eye syndrome. METHODS: Muscle belly union was performed in patients with large-angle esotropia and characteristic findings of heavy eye syndrome on orbital imaging. After isolation of superior and lateral rectus muscle and passing a single armed suture in each muscle belly, approximation was achieved via tying of both arms of separate sutures together. Medial rectus (MR) was also recessed considering the results of the intraoperative force duction test...
July 30, 2018: Strabismus
https://www.readbyqxmd.com/read/30125225/michael-constantine-psellus-1020-1105-ad-and-his-definition-of-strabismus
#4
Gregory Tsoucalas, Theodoros Papaioannou, Marianna Karamanou
Strabismus was a known eye misalignment since the Hippocratic era (ca 5th century BC). Hippocrates and his followers were the first to introduce the hypothesis of a hereditary condition. Many ancient Greek physicians like Galen (ca 2nd AD) provided several definitions, while Paul of Aegina (625-690 AD) was the scholar who introduced a method to treat it. Paul used a full face mask and an oil lamb to guide the eyeballs toward the desired direction. It seems that this approach endured for centuries to come. During 11th century AD in Constantinople, the Byzantine scholar and politician Michael Constantine Psellus (ca 1020-1105 AD) composed a series of philosophical, religious, political and scientific treatises...
September 2018: Strabismus
https://www.readbyqxmd.com/read/30060696/is-microtropia-a-reliable-indicator-of-the-presence-of-amblyopia-in-anisometropic-patients
#5
Deborah Lysons, Jane Tapley
AIM: A study was carried out to determine if the presence of microtropia with identity is a reliable indicator for the presence of amblyopia, and likely need for occlusion, following optical treatment in "straight-eyed" anisometropic children. METHOD: A retrospective case note review was carried out of all children referred from Orthoptic school vision screening during a 10-year period. Children who had unequal visual acuity, no manifest strabismus and who were prescribed spectacles to correct anisometropia (inter-ocular difference one dioptre or more in any meridian) were included in the study...
September 2018: Strabismus
https://www.readbyqxmd.com/read/30060686/long-term-follow-up-after-vertical-extraocular-muscle-surgery-to-correct-abnormal-vertical-head-posture
#6
Priyanka Kumar, Scott R Lambert
PURPOSE: To report outcomes of vertical extraocular muscle surgery to correct abnormal vertical head posture in children with horizontal infantile nystagmus. METHODS: Retrospective case series of seven patients evaluated at one institution with abnormal vertical head position (chin-up or chin-down) in the setting of horizontal infantile nystagmus. All patients underwent bilateral vertical extraocular muscle surgery with the same surgeon. Pre- and postoperative vertical head position under binocular viewing conditions was the primary outcome measure...
September 2018: Strabismus
https://www.readbyqxmd.com/read/29985743/a-modified-vertical-muscle-transposition-for-the-treatment-of-large-angle-esotropia-due-to-sixth-nerve-palsy
#7
Aliakbar Sabermoghadam, Mohammad Etezad Razavi, Mohammad Sharifi, Mohammad Yaser Kiarudi, Sadegh Ghafarian
INTRODUCTION: Multiple different procedures have been proposed to address complete sixth nerve palsy with severe abduction limitation. In this study, we report a modification of the Hummelsheim's procedure. It is in fact muscle pulley transposition that obviates the need for tenotomy or muscle splitting. For the first time, Muraki and Nishida proposed this technique. MATERIALS AND METHODS: Patients with large angle esotropia and abduction limitation of minus four or greater were enrolled...
September 2018: Strabismus
https://www.readbyqxmd.com/read/29894224/efficacy-of-botulinum-toxin-in-the-treatment-of-convergence-spasm
#8
Sonali Gupta, Jason Gan, Saurabh Jain
BACKGROUND: Previous studies have shown that botulinum toxin can be an important adjunct to management of convergence spasm. However, we have not experienced the same level of success in our cohort of patients. METHODS: Using retrospective review, we collected data on patients presenting to our department with convergence spasm. This included presenting symptoms, examination findings, response to atropine and plus lenses, number and dosage of botulinum toxin injections received, and the status at last follow-up/discharge...
September 2018: Strabismus
https://www.readbyqxmd.com/read/29889586/the-effect-of-prism-adaptation-on-the-angle-of-deviation-in-convergence-excess-esotropia-and-possible-consequences-for-surgical-planning
#9
Tess Garretty
Convergence excess esotropia describes a heterophoria with binocular single vision (BSV) on distance viewing that becomes esotropic on accommodation upon near fixation. Prism adaptation test (PAT) is a procedure routinely used to reveal the maximum angle of deviation preoperatively for many types of strabismus and has been shown to improve surgical outcomes; however, it is not conventionally used for convergence excess esotropia. AIM: This study compares the angle of deviation at 1/3 m and 6 m before and after prism adaptation in subjects with convergence excess esotropia to determine if a masked distance angle of deviation can be demonstrated similar to the masked near angle of deviation in some intermittent exotropes...
September 2018: Strabismus
https://www.readbyqxmd.com/read/29775110/near-point-of-convergence-in-iranian-schoolchildren-normative-values-and-associated-factors
#10
Hassan Hashemi, Payam Nabovati, Mehdi Khabazkhoob, Abbasali Yekta, Mohammad Hassan Emamian, Akbar Fotouhi
PURPOSE: To determine the distribution of near point of convergence (NPC) and its related factors in 6 to 12-year-old children. METHODS: In a cross-sectional study in 2015, the urban and rural children of Shahroud, north of Iran, were sampled. All rural schoolchildren were invited to the study, and in the urban area, we conducted random cluster sampling. Examinations included measurement of uncorrected and corrected visual acuity, manifest, subjective, and cycloplegic refraction...
September 2018: Strabismus
https://www.readbyqxmd.com/read/29693497/ocular-neuromyotonia-case-reports-and-literature-review
#11
Anne-Catherine Stockman, Maria Dieltiëns, Hilde Janssens, Maria Van Lammeren, Liesbet Beelen, Veerle Van Bellinghen, Catherine Cassiman
Ocular neuromyotonia (ONM) is a rare eye movement disorder, presenting as a paroxysmal involuntary spasm of one or more extra-ocular muscles, that can persist for a few seconds up to several minutes. The phenomenon is caused by the contraction of an extra-ocular muscle, excited by a damaged nerve, which leads to delayed muscle relaxation. We present eight patients with this rare condition together with an overview of the literature on all published ONM cases. One of the presented cases is possibly secondary to hypovitaminosis D...
September 2018: Strabismus
https://www.readbyqxmd.com/read/29672190/recovery-of-a-disinserted-medial-rectus-muscle-after-pterygium-surgery
#12
Prapatsorn Patikulsila, Atitaya Apivatthakakul, Kasem Seresirikachorn
PURPOSE: To report a case of recovery of a medial rectus which was accidentally disinserted after surgical treatment of a recurrent pterygium. METHOD: Report of a case of inadvertent medial rectus disinsertion after pterygium excision at a secondary care hospital which was referred to a tertiary care hospital in Northern Thailand. RESULT: A 40-year-old healthy woman was referred by a general ophthalmologist at a secondary care center to our hospital...
September 2018: Strabismus
https://www.readbyqxmd.com/read/29952715/treatment-of-amblyopia-part-3-apparatus-exercise-equipment-and-games-continued
#13
Alfred Bangerter
No abstract text is available yet for this article.
June 2018: Strabismus
https://www.readbyqxmd.com/read/29617209/differences-in-the-stimulus-accommodative-convergence-accommodation-ratio-using-various-techniques-and-accommodative-stimuli
#14
Tsukasa Satou, Misae Ito, Yuma Shinomiya, Yoshiaki Takahashi, Naoto Hara, Takahiro Niida
PURPOSE: To investigate differences in the stimulus accommodative convergence/accommodation (AC/A) ratio using various techniques and accommodative stimuli, and to describe a method for determining the stimulus AC/A ratio. METHODS: A total of 81 subjects with a mean age of 21 years (range, 20-23 years) were enrolled. The relationship between ocular deviation and accommodation was assessed using two methods. Ocular deviation was measured by varying the accommodative requirement using spherical plus/minus lenses to create an accommodative stimulus of 10...
June 2018: Strabismus
https://www.readbyqxmd.com/read/29557700/tendon-elongation-with-bovine-pericardium-in-patients-with-severe-esotropia-after-decompression-in-graves-orbitopathy-efficacy-and-long-term-stability
#15
Michael Oeverhaus, Margarethe Fischer, Herbert Hirche, Anke Schlüter, Joachim Esser, Anja K Eckstein
BACKGROUND/AIMS: We performed a retrospective analysis to examine clinical results, establish a dose-effect coefficient and analyze the long-term efficacy of tendon elongation with bovine pericardium (Tutopatch®) for surgical correction of severe esotropia, occurring after three-wall orbital decompression for dysthyroid optic neuropathy in patients with Graves' orbitopathy (GO). METHODS: Tendon elongation of the medial rectus muscle (MR) was performed in our institution using an interponate of bovine pericardium in 60 patients (27 underwent unilateral and 33 bilateral surgery)...
June 2018: Strabismus
https://www.readbyqxmd.com/read/29547011/risk-of-anterior-segment-ischemia-following-simultaneous-three-rectus-muscle-surgery-results-from-a-single-tertiary-care-centre
#16
Shailja Tibrewal, Ramesh Kekunnaya
PURPOSE: The aim of the study was to determine the risk of anterior segment ischemia (ASI) after simultaneous three rectus muscle surgery. METHODS: A retrospective cohort study was conducted. All patients who underwent simultaneous three rectus muscle surgery from January 2003 to December 2014 were included. Medical records were reviewed for signs of acute ASI in the postoperative period or presence of any late sequelae. Those patients who had pre-existing corneal pathology obscuring visualisation of anterior chamber and iris were excluded...
June 2018: Strabismus
https://www.readbyqxmd.com/read/29504830/preliminary-study-impact-of-strabismus-and-surgery-on-eye-movements-when-children-are-reading
#17
Faustine Perrin Fievez, Cynthia Lions, Maria Pia Bucci
AIM: To evaluate differences in eye movements during reading in strabismic children and in non-strabismic age-matched children, and to evaluate the potential effect of strabismus surgery on eye movement performance. METHODS: The eye movements of nine strabismic children from 11 to 15 years old were recorded with an eye tracker as they were reading a text under three visual conditions before and six months after eye surgery. The results were compared with those obtained from control groups of non-strabismic age-matched children...
June 2018: Strabismus
https://www.readbyqxmd.com/read/29494263/clinical-and-histopathologic-features-of-consecutive-exotropia
#18
Mohammad Reza Akbari, Narges Hassanpoor, Masoud Aghsaei Fard, Zohreh Nozarian, Mehdi Yaseri, Arash Mirmohammadsadeghi
PURPOSE: The purpose of this study is to investigate clinical and histopathologic features of consecutive exotropia. METHODS: Thirty patients with consecutive exotropia and negative forced duction testing underwent unilateral medial rectus resection and advancement. Abnormal scleral attachment (appearance of stretched scar or slipped muscle) was documented and compared with histopathology results. The term "stretched scar" is used when tendon-like scar appears between muscle fibers and scleral attachment...
June 2018: Strabismus
https://www.readbyqxmd.com/read/29485308/rectus-muscle-resection-for-vertical-strabismus-in-thyroid-eye-disease
#19
Filofteia Tacea, Edward Loane, Andre Grixti, Ian B Marsh, Kimia Ziahosseini
PURPOSE: Rectus muscle resection in thyroid eye disease (TED) is generally avoided due to the risk of worsening restriction or reactivating inflammation. However, for some patients with large-angle strabismus or diplopia in primary gaze despite maximum recession surgery, rectus muscle resection may be beneficial. We report our surgical experience with rectus muscle resection in the management of vertical strabismus associated with TED. METHODS: Retrospective review of eight patients with TED and vertical diplopia who underwent vertical rectus muscle resection by a single surgeon (IBM) at a tertiary referral centre in Liverpool, UK, from 2001 to 2013...
June 2018: Strabismus
https://www.readbyqxmd.com/read/29485307/simultaneous-superior-rectus-recession-and-anterior-transposition-of-inferior-oblique-muscle-as-a-surgical-option-for-traumatically-lost-inferior-rectus-muscle
#20
Anupam Singh, P K Pandey, Ajai Agrawal, Kartik Maheshbhai Rana, S K Mittal, Barun Kumar
PURPOSE: To evaluate the role of simultaneous superior rectus (SR) recession and anterior transposition of inferior oblique (ATIO) muscle in patients with traumatically lost inferior rectus (IR) muscle. METHODS: Six patients with history of ocular trauma, followed by sudden onset vertical diplopia along with marked hypertropia (HT) and limitation of depression in abduction in the affected eye suggestive of IR disinsertion, were included in this prospective study...
June 2018: Strabismus
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