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Shoaib Hassan, Anjana Haridas, Venki Sundaram
BACKGROUND: Strabismus, or squint, can be defined as a deviation from perfect ocular alignment and can be classified in many ways according to its aetiology and presentation. Treatment can be broadly divided into medical and surgical options, with a variety of surgical techniques being available, including the use of adjustable or non-adjustable sutures for the extraocular muscles. There exists an uncertainty as to which of these techniques produces a better surgical outcome, and an opinion that the adjustable suture technique may be of greater benefit in certain situations...
March 12, 2018: Cochrane Database of Systematic Reviews
Manuel Ángel García-García, José I Belda, Konrad Schargel, María José Santos, José Ruiz-Colecha, Carmen Rey, Pablo García-García, Blas Mompean
PURPOSE: To assess whether optical coherence tomography (OCT) could be useful for detecting and documenting fixation in patients with microtropia. METHODS: Retinal fixation observation was performed using spectral-domain OCT on amblyopic children with microtropia. The position between the retinal fixation point and the anatomical fovea was measured, in microns, using the system software tools. Only patients with a high level of cooperation, OCT scan quality signal of 7 or better, and visual acuity of 0...
January 31, 2018: Journal of Pediatric Ophthalmology and Strabismus
Diogo Dias Castanheira, Eduardo Perovano Santana, Fernanda Godoy-Santos, Raphael Hermano Santos Diniz, Fábio Faria-Oliveira, Renata Rebeca Pereira, Maria José Magalhães Trópia, Ieso Miranda Castro, Rogelio Lopes Brandão
In yeast, as in other eukaryotes, calcium plays an essential role in signaling transduction to regulate different processes. Many pieces of evidence suggest that glucose-induced activation of plasma membrane H+-ATPase, essential for yeast physiology, is related to calcium signaling. Until now, no protein that could be regulated by calcium in this context has been identified. Lpx1p, a serine-protease that is also involved in the glucose-induced activation of the plasma membrane H+-ATPase, could be a candidate to respond to intracellular calcium signaling involved in this process...
February 1, 2018: FEMS Yeast Research
Raiza Menezes Venturim Salvador, Fernanda Pim, Hermínio Arias Nalini Júnior, Adriana Trópia de Abreu, Elisângela Flavia Pimentel, Lorena Oliveira de Cerqueira, Paulo Dias Ferreira Junior, Denise Coutinho Endringer
Urbanization is responsible for numerous environmental changes including pollution. Information on the susceptibility of reptiles to environmental contaminants is relatively scarce. Tropidurus torquatus represents a potential bioindicator of heavy metal pollution. Levels of heavy metals in tissues from T. torquatus depend on bioavailability and vary among different populations. The aim of this study was to determine the heavy metal concentration in liver and fat tissue of T. torquatus from three distinct populations in the state of Espírito Santo, Brazil...
January 2018: Environmental Science and Pollution Research International
Mikel Mikhail, Michael Flanders
OBJECTIVE: The aim of this study was to describe the clinical features and surgical outcomes of teenage and adult patients with esotropia undergoing strabismus surgery with adjustable sutures. METHODS: Seventy-three patients were included in this retrospective, cohort study. Patients were stratified into group 1 (35 with childhood-onset esotropia [CET]) and group 2 (38 with adult-onset esophoria-tropia [EPT]). Preoperative immediate, 2-week, and 4-6-month postoperative measurements of ocular alignment, as well as fusional testing, were performed...
August 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
Seung Pil Bang, Soon Young Cho, Se Youp Lee
PURPOSE: To compare long-term surgical outcomes after bilateral lateral rectus recession (BLR) and unilateral lateral rectus recession-medial rectus resection (RR) for the treatment of basic-type intermittent exotropia. METHODS: Consecutive patients who underwent BLR or RR for treatment of intermittent exotropia between 1999 and 2010 and underwent ≥5 years of follow-up were recruited for this study. Surgical outcomes were grouped according to postoperative angle of deviation: overcorrection (esophoria/tropia >8 prism diopters [Δ]), success (esophoria/tropia ≤8Δ to exophoria/tropia ≤8Δ), and undercorrection/recurrence (exophoria/tropia >8Δ)...
August 2017: Korean Journal of Ophthalmology: KJO
Rui Hao, Kanxing Zhao, Wei Zhang
BACKGROUND: To study the resolution of hypertropia in patients who undergo horizontal deviation surgery for consecutive esotropia or consecutive exotropia. METHODS: We retrospectively reviewed the records of 23 patients with consecutive esotropia or exotropia who had concomitant vertical tropia. All patients had had surgery for horizontal deviation that required further surgery to correct consecutive horizontal strabismus and had a minimum of six months of postoperative follow-up...
July 2017: Journal of the Chinese Medical Association: JCMA
Hassan Hashemi, Payam Nabovati, Abbasali Yekta, Hadi Ostadimoghaddam, Bardia Behnia, Mehdi Khabazkhoob
PURPOSE: To determine the prevalence of different types of strabismus and heterophoria and their associated factors in underserved rural areas of Iran. METHODS: Two rural areas in the north and southwest of Iran were randomly sampled using multistage cluster sampling. Individuals aged over 1 year, totaling 3851, were invited to participate in the study. In addition to collecting demographic data, optometric examinations were performed for each participant. Unilateral and alternating cover tests were performed at far (6 m) and near (40 cm) to detect tropia and phoria, respectively, and the magnitude of the deviation was measured using alternating cover test and prism bar...
June 2017: Strabismus
Rehab Rashad Kassem, Ahmed Mostafa Kamal, Randa Mohamed Abdel-Moneim El-Mofty, Hala Mostafa Elhilali
PURPOSE: To evaluate the effects of using cryopreserved human amniotic membrane (AM) transplant during strabismus reoperations. METHODS: A total of 30 patients with persistent strabismus were included in this prospective study. Patients were divided into two groups of 15 patients each. The AM group underwent strabismus reoperation with wrapping of the muscles with cryopreserved amniotic membrane. Controls underwent strabismus reoperation without an AM wrap. Final follow-up visit was scheduled between 3 and 12 months postoperatively...
April 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
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)...
May 2017: Japanese 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)...
June 2017: International Ophthalmology
AbbasAli Yekta, Hassan Hashemi, Hadi Ostadimoghaddam, Batool Haghighi, Hava Shafiee, Shiva Mehravaran, Payam Nabovati, Amir Asharlous, Mehdi Khabazkhoob
PURPOSE: To determine the prevalence of strabismus and amblyopia, and the distribution of the near point of convergence (NPC), in a population of children aged 4 to 6 years. METHODS: In this cross-sectional study, preschoolers in Mashhad were sampled using a random multistage cluster sampling approach. Examinations were done after obtaining parental consent. All participants had measurements of uncorrected visual acuity, corrected visual acuity, and non-cycloplegic refraction, and they had near and far cover tests to determine tropia and phoria...
September 2016: Strabismus
A M Kamal, D Abozeid, Y Seif, M Hassan
PurposeTo compare the results of using adjustable and non-adjustable sutures in primary horizontal strabismus surgeries in children.MethodsThis randomized control trial included 60 cases of primary horizontal deviation. The adjustable suture (AS) group included 30 patients, and the non-adjustable suture (NAS) group included 30 patients. The follow-up period was at least 6 months. A successful motor outcome was defined as orthophoria or a horizontal tropia of 8 PD or less at both near and far distances. The success rate and ocular drift were recorded and analysed...
November 2016: Eye
Ling Ma, Likun Yang, Ningdong Li
PURPOSE: To evaluate the surgical efficacy of bilateral lateral rectus recession (BLRR) for intermittent exotropia with convergence insufficiency (CI-type X[T]). METHODS: The medical records of patients with CI-type X(T) who underwent BLRR on adjustable suture from January 2011 to March 2014 were retrospectively reviewed. Ocular alignment and sensory status were evaluated pre- and postoperatively for each patient. The mean distance and mean near deviation, before and after surgery, as well as the mean near-distance difference, were compared...
June 2016: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
Hyuna Kim, Hee Kyung Yang, Jeong-Min Hwang
PURPOSE: To compare the surgical outcomes of unilateral lateral rectus recession-medial rectus resection (RR) and unilateral lateral rectus recession (ULR) for intermittent exotropia of ≤20 prism diopters (PD). DESIGN: Retrospective, nonrandomized clinical study. METHODS: A total of 130 children with intermittent exotropia of ≤20 PD who underwent unilateral RR or ULR of 10 mm were included. Patients were observed for at least 2 years...
June 2016: American Journal of Ophthalmology
E Jarrín, E Arranz Márquez, L Yebra González, J García Gil de Bernabé
OBJECTIVE: To analyse the indications, dosage and efficacy of botulinum toxin A injection performed in patients in a Strabismus Department. METHODS: In this prospective study, botulinum toxin A was injected into 28 patients diagnosed with strabismus. Data was obtained from the records of patients that were evaluated during 2013 in the Strabismus Unit of Rey Juan Carlos Hospital (Móstoles, Madrid, Spain) in order to assess the indications and dosage of botulinum toxin A use in strabismus, as well as its clinical effect and differences in paediatric and adult patients...
March 2016: Archivos de la Sociedad Española de Oftalmología
Hyuna Kim, Hee Kyung Yang, Jeong-Min Hwang
PURPOSE: To compare the long-term surgical outcomes of augmented bilateral lateral rectus (LR) recession with original surgery. DESIGN: Retrospective, nonrandomized clinical study. METHODS: A total of 447 children with ≤35 prism diopters (PD) of basic and divergence excess-type intermittent exotropia, who underwent original bilateral LR recession based on the largest angle measured at distance and near, or augmentation surgery with the surgical dosage augmented by 1...
March 2016: American Journal of Ophthalmology
Naz Jehangir, S M Jafar Mahmood, Tova Mannis, Majid Moshirfar
PURPOSE OF REVIEW: The purpose of this article is to highlight some common issues when planning cataract surgery in patients with preexisting ocular pathologies and to assess the role of ocular dominance in cataract surgery. RECENT FINDINGS: In addition to routine ocular examination, determination of ocular dominance and orthoptic evaluation for tropias, phorias, amblyopia, and diplopia can be helpful in planning for cataract surgery as these factors can affect postoperative outcomes...
January 2016: Current Opinion in Ophthalmology
Chrysavgi Adamopoulou, Rajesh C Rao
PURPOSE: Unilateral medial rectus recession is a treatment option to surgically correct consecutive esotropia. This study evaluated the surgical outcomes of patients who underwent unilateral medial rectus recession for the treatment of consecutive esotropia after surgery for intermittent exotropia. METHODS: The medical records of 16 patients who underwent surgical correction of consecutive esotropia with unilateral medial rectus recession were retrospectively reviewed...
November 2015: Journal of Pediatric Ophthalmology and Strabismus
Hassan Hashemi, Payam Nabovati, Nooshin Dadbin, Zahra Heidari, AbbasAli Yekta, Ebrahim Jafarzadehpur, Hadi Ostadimoghaddam, Mehdi Khabazkhoob
PURPOSE: To determine the prevalence of ptosis (congenital/acquired) in Iranian children aged 7 years and its relationship with amblyopia and strabismus. METHODS: Eight Iranian cities were selected for this cross-sectional study using multistage randomized cluster sampling. A number of primary schools were randomly selected in each city. All grade 1 students in each selected primary school underwent optometric examinations including the measurement of uncorrected and corrected visual acuity, cover test, and cycloplegic and non-cycloplegic refraction...
2015: Strabismus
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