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Eric Y Kim, Gill Roper-Hall, Oscar A Cruz
PURPOSE: To report one surgeon's experiences with bilateral lateral rectus resections in dysthyroid ophthalmopathy patients with residual esotropia after initial bilateral medial rectus recession. DESIGN: Retrospective interventional case series evaluating outcomes. METHODS: Medical records for patients with dysthyroid ophthalmopathy who underwent bilateral lateral rectus resections for persistent esotropia by a single surgeon from June 2012 to June 2015 were retrospectively reviewed...
August 30, 2016: American Journal of Ophthalmology
María-José Molina-Torres, María-Del-Mar Seguí Crespo, Ana Tauste Francés, Blanca Lumbreras Lacarra, Elena Ronda-Pérez
OBJECTIVE: To compare the diagnostic accuracy of two vision screeners by a visual examination performed by an optometrist (gold standard) and to evaluate the concordance between both screeners and between each screener and the gold standard. METHODS: This was a cross-sectional study that included computer workers who attended a routine yearly health examination. The study included administrative office workers (n=91) aged 50.2±7.9 years (mean±standard deviation), 69...
September 30, 2016: Journal of Occupational Health
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
Joseph Samuel Conrad, G Lynn Mitchell, Marjean Taylor Kulp
PURPOSE: To prospectively evaluate the effectiveness of home-based computer vergence therapy for the treatment of binocular vision disorders in adults at least 3 months after an acquired brain injury. METHODS: Eligibility criteria included presence of binocular dysfunction characterized by receded near point of convergence (≥6 cm break), insufficient positive fusional vergence at near (failing Sheard's criterion or <15△ blur or break), insufficient negative fusional vergence at near (<12△ blur or break), and/or reduced vergence facility at near (<15 cycles per minute with 12△BO/3△BI)...
July 23, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Jaeho Jung, Lindsay Klaehn, Michael C Brodsky
PURPOSE: To evaluate the stability of human binocular alignment under conditions of altered fixation and luminance. METHODS: Horizontal binocular alignment in 8 healthy orthotropic subjects was measured using infrared video-oculography (VOG) under conditions of binocular fixation and luminance change. Each testing condition was preceded by a binocular fixation period in room light (475 lux) to define the baseline binocular alignment. Binocular alignment was then measured in darkness without fixation, in room light through a semitranslucent filter that precluded fixation, and in darkness with a distant fixational target...
August 2016: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
Jerome Ozkan, Cathleen Fedtke, Jiyoon Chung, Varghese Thomas, Ravi Chandra Bakaraju
OBJECTIVES: To investigate whether adaptation of accommodative responses occurred in non-presbyopic myopes fitted with four multifocal contact lens (MFCL) designs. METHODS: Prospective, subject-masked clinical investigation comprising 40 experienced myopic lens wearers (18-25 years) fitted bilaterally with single-vision (SV) control lens (Air Optix Aqua [Alcon, Fort Worth, TX]) and randomized to two of four test MFCL (Proclear MFCL [Distance and Near] [CooperVision, Pleasanton, CA], Air Optix Aqua MFCL, Purevision MFCL [Bausch & Lomb, Rochester, NY])...
June 20, 2016: Eye & Contact Lens
M Lamard, S Ferragut, C Hugny-Larroque, J-L De Bougrenet De La Tocnaye, B Cochener
PURPOSE: To compare standard orthoptic tests with a novel digital 3D orthoptic platform, 3DeltaEasy(©) from Orthoptica(®). MATERIALS AND METHODS: This study tests the 3D digital orthoptics platform, 3DeltaEasy(©) from Orthoptica(®) and compares it to the corresponding standard orthoptic tests. This platform consists of a computer equipped with dedicated software, a video projector and 3D liquid crystal glasses. Three tests were compared: Wirt test, measurement of horizontal and vertical phorias, and the horizontal fusional amplitude in convergence and divergence...
May 2016: Journal Français D'ophtalmologie
Godwin O Ovenseri-Ogbomo, Ovigwe Peter Eguegu
PURPOSE: The study was designed to determine the prevalence of vergence dysfunctions among first year university students in Nigeria and to document the measures that define the vergence system of the visual system. METHODS: A cross-sectional study of first year students of the University of Benin, Benin City, Nigeria, who presented for the mandatory eye examination as part of their medical examinations required for clearance was conducted. A battery of tests that defines the vergence system including near and far phoria, positive and negative fusional vergence amplitudes at far and near, near point of convergence (NPC) and AC/A ratio were measured using conventional clinical protocols...
October 2016: Journal of Optometry
Teresa Zwierko, Lidia Puchalska-Niedbał, Justyna Krzepota, Mikołaj Markiewicz, Jarosław Woźniak, Wojciech Lubiński
Binocular vision is the most important visual cue for spatial orientation in many sports. In this study, we investigated how binocular vision was influenced by an eye training program that may be used to improve individual's oculomotor function. The experiment involved twenty-four female student athletes from team ball sports (soccer, basketball, handball). After an initial testing session, 12 participants were randomly allocated to the experimental group. Optometric investigation which included synoptophore testing and a test of dissociated horizontal phoria based on the Maddox method was performed three times: before the experiment, after eight weeks of eye training (3 times a week for 20 minutes), and four weeks after the experiment was terminated...
December 22, 2015: Journal of Human Kinetics
José E Capó-Aponte, Kendra L Jorgensen-Wagers, Josue A Sosa, David V Walsh, Gregory L Goodrich, Leonard A Temme, Daniel W Riggs
PURPOSE: To assess the prevalence of visual dysfunctions and associated symptoms in war fighters at different stages after non-blast- or blast-induced mild traumatic brain injury (mTBI). METHODS: A comprehensive retrospective review of the electronic health records of 500 U.S. military personnel with a diagnosis of deployment-related mTBI who received eye care at the Landstuhl Regional Medical Center. For analysis, the data were grouped by mechanism of injury, and each group was further divided in three subgroups based on the number of days between injury and initial eye examination...
February 17, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Muriel Dysli, Mathias Abegg
Incomitance is a condition with gaze-dependent deviations of ocular alignment and is common in strabismus patients. The physiological mechanisms that maintain equal horizontal ocular alignment in all gaze directions (concomitance) in healthy individuals are poorly explored. We investigate adaptive processes in the vergence system that are induced by horizontal incomitant vergence stimuli (stimuli that require a gaze-dependent vergence response in order to re-establish binocular single vision). We measured horizontal vergence responses elicited after healthy subjects shifted their gaze from a position that required no vergence to a position that required convergence...
2016: Journal of Vision
Huiling Lin, Björn Drobe, Wanqing Jin, Meng Lin, Yunyun Chen, Hao Chen
PURPOSE: To investigate the effects of different near addition lenses and prisms on accommodative microfluctuations (AMFs) in Chinese early-onset myopic (EOM) and emmetropic (EMM) children. METHODS: Twenty-one EMM and 27 EOM children aged between 9 and 14years participated in the study. At near, 23 children were exophoric (exo, <0 Δ), and 25 were esophoric (eso, ≥0 Δ). The AMFs and phoria through multiple addition lenses (-1.00, 0, +1.00, +2.00, and +3.00D on each eye) and prisms (base-in prism power: 3 Δ, 2 Δ, 1 Δ; and base-out prism power: 1 Δ and 2 Δ on each eye) were measured at 25cm under binocular viewing conditions with a Grand Seiko WAM-5500 auto-refractor and a modified Thorington card...
May 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Thomas A Aller, Maria Liu, Christine F Wildsoet
PURPOSE: Most studies have reported only minimal reductions in myopia progression with bifocal or progressive multifocal spectacles, although somewhat larger, although mostly still clinically insignificant, effects have been reported in children with nearpoint esophoria and/or accommodative dysfunctions. The CONTROL study was a 1-year, prospective, randomized, clinical trial of bifocal contact lenses for control of myopia in children with eso fixation disparities at near. METHODS: Eighty-six myopic subjects, aged 8 to 18 years, were enrolled in the study after passing the screening examination...
April 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Henry Talasan, Mitchell Scheiman, Xiaobo Li, Tara L Alvarez
This study sought to determine whether significant changes would be observed between vergence eye movements before and after 12 hr of repetitive vergence therapy (1 hr per day on different days) in subjects with normal binocular vision compared to controls. Disparity vergence responses from 23 subjects were studied. An assessment protocol that minimized the influence of the near dissociated phoria on the disparity vergence system was designed. The following parameters were quantified for the responses: latency, time to peak velocity, settling time, peak velocity, and accuracy (difference between the response and stimulus amplitudes)...
2016: Journal of Vision
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
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
Jinhua Bao, Yuwen Wang, Zuopao Zhuo, Xianling Yang, Renjing Tan, Björn Drobe, Hao Chen
AIMS: To determine the influence of single-vision lenses (SVLs) and progressive addition lenses (PALs) on the near vision posture of myopic children based on their near phoria. METHODS: Sixty-two myopic children were assigned to wear SVLs followed by PALs. Eighteen children were esophoric (greater than +1), 18 were orthophoric (-1 to 1) and 26 were exophoric (less than -1) at near. Reading distance, head tilt and ocular gaze angles were measured using an electromagnetic system after adaptation to each lens type...
August 2016: British Journal of Ophthalmology
Xinping Yu, Jinhua Bao, Björn Drobe, Wenhui Lv, Ge Wu, Jinling Xu, Hao Chen
PURPOSE: To compare personalized near addition values for myopic children that induce a reasonable phoria (Ph) (meeting Sheard's criterion) and induce a null lag of accommodation at near and to evaluate changes in these metrics after lens adaptation. METHODS: Fifty-three myopic children participated in this study. Accommodative response, Ph, and fusional amplitudes (FAs) were measured at 33 cm through multiple addition lenses (0D, +1.00D, +1.50D, +2.00D, +2.50D, +3...
January 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
N J Gross, H Link, J Biermann, M Kiechle, W A Lagrèze
BACKGROUND: Surgical correction of intermediate squint angles may be performed on one muscle alone or as a combined unilateral recess-resect procedure. No larger case series has yet systematically measured the amount of induced incomitance that could potentially lead to visual disturbances. METHODS: 31 patients with strabismus and binocular vision (phoria or intermittent strabismus) were operated on one extraocular eye muscle; 30 patients underwent a unilateral recess-resect procedure...
October 2015: Klinische Monatsblätter Für Augenheilkunde
Pauline Kang, Christine F Wildsoet
PURPOSE: To characterise the effects on accommodation and binocular vision in young adults of 2 distance centre multifocal soft contact lenses (MFSCLs), differing in add power. METHODS: Twenty-four young adult myopes (18-28 years; 20 females, 4 males) had baseline visual acuity, accommodation, near phoria, fixation disparity and stereopsis data collected with single vision (SV) SCLs. The same set of measurements was repeated immediately after subjects were fitted with each of two MFSCLs (with either +1...
April 2016: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
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