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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
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
Hee Kyung Yang, Mi-Jin Kim, Jeong-Min Hwang
BACKGROUND: There are few long-term outcome reports of unilateral lateral rectus (LR) recession for exotropia including a large number of subjects. Previous reports on unilateral LR recession commonly show extremely low rates of initial overcorrection and large exodrifts after surgery suggesting that the surgical dose may be increased. However, little is known of the long-term outcome of a large unilateral LR recession for exotropia. OBJECTIVES: To determine long-term outcomes and predictive factors of recurrence after a large unilateral LR recession in patients with exotropia...
2015: PloS One
Hae Jin Kim, Dong Gyu Choi
PURPOSE: To analyse the characteristics of children who had maintained the successful outcome at 2 years after surgery for intermittent exotropia. METHODS: A retrospective study was performed in 216 patients who had undergone intermittent exotropia surgery and had had at least 2 years of follow-up. Surgical outcomes were grouped, according to the angle of deviation at postoperative 2 years, as success (esophoria/tropia ≤ 5 prism dioptres (PD) to exophoria/tropia ≤ 10PD), recurrence (exotropia > 10PD or reoperation within 2 years) or overcorrection (esophoria/tropia > 5PD)...
March 2016: Acta Ophthalmologica
Ou Xiao, Ian G Morgan, Leon B Ellwein, Mingguang He
PURPOSE: To estimate the age-, gender-, and ethnicity-specific prevalence of amblyopia in children aged 5 to 15 years using data from the multi-country Refractive Error Study in Children (RESC). DESIGN: Population-based, cross-sectional study. PARTICIPANTS: Among 46 260 children aged 5 to 15 years who were enumerated from 8 sites in the RESC study, 39 551 had a detailed ocular examination and a reliable visual acuity (VA) measurement in 1 or both eyes...
September 2015: Ophthalmology
Maria del Pilar González, Stephen P Kraft
PURPOSE: To compare the efficacy of three different vertical rectus muscle transposition (VRT) techniques performed as a sole procedure to correct ocular alignment and improve abduction in cases of complete abducens nerve palsy. METHODS: The medical records of patients with complete abducens nerve palsy who underwent one of three different VRT procedures without simultaneous medial rectus weakening over a period of 20 years were retrospectively reviewed. The following procedures were used: full-tendon transposition (FTT), FTT with 4 mm resections before reinsertion (FTTR), and FTT with myopexy sutures (FTTM)...
April 2015: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
Renata R Pereira, Diogo Castanheira, Janaina A Teixeira, Leoneide E M Bouillet, Erica M C Ribeiro, Maria M J Trópia, Florencia Alvarez, Lygia F M Correa, Bruno E F Mota, Luis Eduardo F R Conceição, Ieso M Castro, Rogelio L Brandão
This study displays a screening using yeast strains deficient in protein kinases known to exist in Saccharomyces cerevisiae. From 95 viable single mutants, 20 mutants appear to be affected in the glucose-induced extracellular acidification. The mutants that are unaffected in calcium signaling were tested for their sensitivity to hygromycin B. Furthermore, we verified whether the remaining mutants produced enzymes that are appropriately incorporated at plasma membrane. Finally, we measure the kinetic properties of the enzyme in purified plasma membranes from glucose-starved as well as glucose-fermenting cells...
March 2015: FEMS Yeast Research
Dimitri Renard, Adelaide Ferraro, Marie-Celine Lorenzini, Luc Jeanjean, Marie-Claire Portal, Elisabeth Llinares, Pierre Labauge, Giovanni Castelnovo
INTRODUCTION: Mild ophthalmoparesis can be seen in oculopharyngeal muscular dystrophy (OPMD). METHODS: Orthoptic analysis included assessment of phoria/tropia, eye excursion, saccades, pursuit, stereoacuity, and Hess-Lancaster screen test. Video-oculography included fixation, horizontal and vertical saccades, and pursuit. RESULTS: Orthoptic abnormalities were: tropia (4 of 6); abnormal eye excursion (4 of 6, 78% involved lateral or superior rectus muscles); abnormal horizontal or vertical saccades (2 of 6); abnormal pursuit (0 of 6); abnormal stereoacuity (2 of 6); and pathological Hess-Lancaster screen (4 of 6)...
October 2015: Muscle & Nerve
Hassan Hashemi, AbbasAli Yekta, Ebrahim Jafarzadehpur, Hadi Ostadimoghaddam, Babak Eshrati, Saman Mohazzab-Torabi, Mehdi Khabazkhoob, Sara Soroush
PURPOSE: To determine the prevalence of tropia and phoria in Iran and their association with some related factors. METHODS: In a cross-sectional population-based study, multistage randomized cluster sampling was used to select participants from among grade 1 students in the primary schools of 7 cities of Iran. After obtaining their parents' approval, the students underwent the measurement of uncorrected and corrected visual acuity, cycloplegic refraction, and cover test...
2015: Strabismus
J M Holmes, S R Hatt, D A Leske
Surgical treatment of childhood intermittent exotropia (XT) is associated with high recurrence rates. In addition, the natural history of intermittent XT has not been rigorously studied and, anecdotally, some cases resolve without surgery. We compared long-term cure rates in children with surgically and non-surgically managed intermittent XT. Children undergoing surgery for intermittent XT who had 5 years follow-up were retrospectively identified. A non-surgical cohort of comparable children was selected by matching each surgical patient for age at onset and age at the 5-year examination...
February 2015: Eye
Susan A Cotter, Brian G Mohney, Danielle L Chandler, Jonathan M Holmes, Michael X Repka, Michele Melia, David K Wallace, Roy W Beck, Eileen E Birch, Raymond T Kraker, Susanna M Tamkins, Aaron M Miller, Nicholas A Sala, Stephen R Glaser
OBJECTIVE: To determine the effectiveness of prescribed part-time patching for treatment of intermittent exotropia (IXT) in children. DESIGN: Multicenter, randomized clinical trial. PARTICIPANTS: Three hundred fifty-eight children 3 to <11 years of age with previously untreated (except for refractive correction) IXT and near stereoacuity of 400 seconds of arc or better were enrolled. Intermittent exotropia met the following criteria: (1) IXT at distance OR constant exotropia at distance and either IXT or exophoria at near; (2) exodeviation (tropia or phoria) of at least 15 prism diopters (PD) at distance or near by prism and alternate cover test (PACT); and (3) exodeviation of at least 10 PD at distance by PACT...
December 2014: Ophthalmology
J A Caldeira
A bilateral recession of an overacting superior oblique was performed in nine patients with "A" pattern ranging from 12 to 48 diopters, with an average of 24 prism diopters.There were six esotropic and three exotropic subjects. In all cases but one, some surgery of one or two horizontal recti was done at same time.An under correction was observed in two patients, of respectively 13 and 9 prism diopters. An overcorrection not exceeding 15 prism diopters was seen in six patients; in four it measured 3 prism diopters or less...
September 1978: Journal of Pediatric Ophthalmology and Strabismus
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