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Retinoscopy

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https://www.readbyqxmd.com/read/29615113/intraocular-lens-power-calculation-for-the-equine-eye
#1
Ulrike Meister, Christiane Görig, Christopher J Murphy, Hubertus Haan, Bernhard Ohnesorge, Michael H Boevé
BACKGROUND: Phacoemulsification and intraocular lens (IOL) implantation during cataract surgery in horses occur with increasing frequency. To reduce the postoperative refractive error it is necessary to determine the proper IOL power. In the present study retinoscopy, keratometry and ultrasonographic biometry were performed on 98 healthy equine eyes from 49 horses. The refractive state, corneal curvature (keratometry) and the axial location of all optical interfaces (biometry) were measured...
April 3, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29575034/accommodative-accuracy-by-retinoscopy-versus-autorefraction-spherical-equivalent-or-horizontal-meridian-power
#2
Angeline T Nguyen, Jenna L Wayne, Ayeswarya Ravikumar, Ruth E Manny, Heather A Anderson
BACKGROUND: To assess agreement between accommodative lag by monocular estimation method (MEM) retinoscopy and Nott retinoscopy compared to open-field autorefraction using spherical equivalent versus power in the 180 meridian for both children and adults. METHODS: Twenty-six children aged 7-16 years (mean: 9.9 ± 2.3) and 27 adults aged 22-29 years (mean: 24.2 ± 1.7) participated. Accommodative lag was measured by examiners with autorefraction and separate examiners using MEM and Nott retinoscopy while subjects viewed 6/18 letters at 33 cm...
March 25, 2018: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/29543196/-vitrectomy-technique-in-aggressive-posterior-retinopathy-of-prematurity
#3
A V Tereshchenko, Yu A Belyy, Yu A Sidorova, I G Trifanenkova, M S Tereshchenkova, Yu A Yudina
AIM: to develop the methodology of early primary vitrectomy for aggressive posterior retinopathy of prematurity. MATERIAL AND METHODS: The study included 10 preterm infants (20 eyes; gestational term - 26-30 weeks, post-conceptual age - 34-39 weeks) with severe forms of aggressive posterior retinopathy of prematurity (AP-ROP). All patients underwent a complex ophthalmic examination. Their results were compared with retrospective data of earlier treated AP-ROP patients (10 preterm infants, 20 eyes), in whom laser photocoagulation (LC) was done first (gestational period at the time of LC ranged from 26 to 30 weeks, post-conceptual age - from 34 to 39 weeks)...
2018: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/29461005/clinical-findings-and-normative-ocular-data-for-free-living-anna-s-calypte-anna-and-black-chinned-archilochus-alexandri-hummingbirds
#4
Bret A Moore, David J Maggs, Soohyun Kim, Monica J Motta, Ruta Bandivadekar, Lisa A Tell, Christopher J Murphy
OBJECTIVE: To estimate the prevalence of ocular disease and obtain normative ocular data for free-living hummingbirds. ANIMALS STUDIED: Two hundred and sixty-three free-living, adult Hummingbirds from coastal and inland central California were studied, including Anna's (Calypte anna, n = 186) and Black-chinned (Archilochus alexandri; n = 77) hummingbirds. PROCEDURES: Slit lamp biomicroscopy and indirect ophthalmoscopy were performed on all individuals...
February 20, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29439996/overestimation-of-hyperopia-with-autorefraction-compared-with-retinoscopy-under-cycloplegia-in-school-age-children
#5
Hassan Hashemi, Mehdi Khabazkhoob, Amir Asharlous, Abbasali Yekta, Mohammad Hassan Emamian, Akbar Fotouhi
AIM: To compare sphere and cylinder refraction values using retinoscopy and autorefraction under cycloplegic conditions in children. METHODS: This cross-sectional study was carried out using multistage cluster sampling. The target population was children aged 6-12 years in Shahroud, a northern city in Iran. Examinations included measurements of visual acuity, subjective refraction and objective refraction. Objective refraction was measured with and without cycloplegia with a retinoscope and an autorefractometer...
February 13, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29424829/accommodative-function-in-individuals-with-autism-spectrum-disorder
#6
Pamela M Anketell, Kathryn J Saunders, Stephen M Gallagher, Clare Bailey, Julie-Anne Little
SIGNIFICANCE: Accommodative responses were significantly poorer in individuals with autism spectrum disorder (ASD) compared with age-matched typically developing control subjects, and hypoaccommodation was associated with reduced near visual acuity (NVA) and convergence. PURPOSE: Autism spectrum disorder is a neurodevelopmental disorder with a reported prevalence of 1.1 to 1.5%. Accommodative dysfunction has been noted in other developmental conditions including cerebral palsy and Down syndrome...
February 8, 2018: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/29422753/investigating-the-visual-status-of-preschool-children-in-riyadh-saudi-arabia
#7
Ali M Alsaqr, Ghayda'a Ibrahim, Ali Abu Sharha, Raied Fagehi
PURPOSE: The purpose of the study was to explore the vision status of preschool children aged 3-6 years in Al Riyadh and to identify children at risk of amblyopia. MATERIALS AND METHODS: This was a cross-sectional population-based study. Visual acuity (VA) was measured using 15-line Lea symbols, refractive error was assessed using the Mohindra near retinoscopy technique, and peak contrast sensitivity (CS) was measured with the aid of the numerical CS test. We recruited 335 children, with their parents' written consent, from 14 kindergartens...
October 2017: Middle East African Journal of Ophthalmology
https://www.readbyqxmd.com/read/29285779/analysing-the-ocular-biometry-of-new-born-infants
#8
Jos J Rozema, Zvi Herscovici, Moshe Snir, Ruth Axer-Siegel
PURPOSE: To model and analyse the ocular biometry of new-born infants. METHODS: This work is based on previously published data of a cohort of 66 new-born infants aged 0-3 days. After exclusion of seven myopic subjects, the available retinoscopy, keratometry and ultrasound biometry data were analysed, along with calculated parameters such as lens power and whole eye power. RESULTS: Male infants have significantly flatter corneas that female infants (Mann-Whitney U test, p < 0...
March 2018: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/29230414/analysis-of-the-ocular-refractive-state-in-fighting-bulls-astigmatism-prevalence
#9
Juan M Bueno, Matteo Lo Sapio, J Manuel Sanes, Juan Seva
The purpose of this study was to describe the ocular refractive state (ORS) of fighting bulls. The study consisted of 90 ophthalmological healthy animals (85 in post-mortem and 5 in living conditions, resp.). The ORS of the eyes (2 per animal) was determined using streak retinoscopy. In vivo animals were assessed at a fighting bull farm facility. Post-mortem measurements were carried out at a local arena. The ORS along the horizontal meridian ranged between -1.00 and +2.50 diopters (D), with a mean of +0.66 ± 0...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29207695/association-of-glycated-haemoglobin-and-serum-apolipoproteins-with-diabetic-retinopathy-an-indian-overview
#10
Bhasker Mukherjee, Sandeep Shankar, Rehan Ahmed, Kanchan Singh, Kapil Bhatia
Introduction: India is presently facing an epidemic of diabetes mellitus and the risks of chronic complications from the disease are associated with the duration of the disease as well as the degree of hyperglycaemia. Diabetic retinopathy is a known microvascular complication of diabetes mellitus and is the most common cause of blindness in the western countries.Apolipoproteins are the protein component of lipoproteins. Apart from acting as structural proteins, they also act as cofactors to various enzymes...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29163988/effect-of-mt3-on-retinal-and-choroidal-tgf-%C3%AE-2-and-has2-expressions-in-form-deprivation-myopia-of-guinea-pig
#11
Tao Li, Xiaodong Zhou, Bing Li, Bo Jiang
Purpose: To confirm its dose-dependent effect on form deprivation myopia and evaluate the effect of MT3 at different tissue concentrations on changes in mRNA and protein expression for TGF- β 2 and HAS2. Methods: MT3 was intravitreally injected into deprived eyes at two-day intervals. Refraction was measured by streak retinoscopy after cycloplegia. The axial dimensions were measured by A-scan ultrasound. The quantitative RT-PCR and Western blot were used to detect the changes of TGF- β 2 and HAS2 expressions in the retina and choroid of guinea pigs...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29140824/beginnings-of-astigmatism-understanding-and-management-in-the-19th-century
#12
Andrzej Grzybowski, Piotr Kanclerz
Within the last 200 years, the perception of astigmatism has evolved from that of an infrequent and peculiar defect of the eye to a distortion almost as common as spherical refractive errors. Most of the significant findings on this condition were made in the 19th century, including the first description by Thomas Young (1773-1829) and the introduction of the treatment methods used today. The purpose of this study was to investigate the milestones in the understanding and management of astigmatism that occurred up to the year 1900...
November 14, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/29135357/short-term-refractive-effects-of-propranolol-hydrochloride-prophylaxis-on-retinopathy-of-prematurity-in-very-preterm-newborns
#13
Levent Korkmaz, Cagatay Karaca, Mustafa Ali Akin, Osman Bastug, Mustafa Sahiner, Ahmet Ozdemir, Tamer Gunes, Mehmet Adnan Ozturk, Selim Kurtoglu
PURPOSE: Retinopathy of prematurity (ROP) is one of the major problems of surviving premature infants with several ophthalmic morbidities such as increased risk of refractive errors, strabismus, and cortical visual impairment. Use of propranolol hydrochloride (PH) for the prevention of ROP is a new promising treatment modality. However, long-term effects are still to be defined. In our study, we aimed to investigate the short-term refractive effects of PH used for ROP prophylaxis in very preterm newborns...
February 2018: Current Eye Research
https://www.readbyqxmd.com/read/29132914/comparison-of-cyclopentolate-versus-tropicamide-cycloplegia-a-systematic-review-and-meta-analysis
#14
Negareh Yazdani, Ramin Sadeghi, Hamed Momeni-Moghaddam, Leili Zarifmahmoudi, Asieh Ehsaei
PURPOSE: The aim of the present meta-analysis is to compare the efficacy of cyclopentolate and tropicamide in controlling accommodation during refraction. METHODS: A comprehensive literature search was performed in PubMed, Scopus, Science direct and Ovid databases by the key words: "tropicamide"; "cyclopentolate"; "cycloplegia" and "cycloplegic" from inception to April 2016. Methodological quality of the literature was evaluated according to the Oxford Center for Evidence Based Medicine and modified Newcastle-Ottawa scale...
November 10, 2017: Journal of Optometry
https://www.readbyqxmd.com/read/29109659/amblyopia-in-children-analysis-among-preschool-and-school-children-in-the-city-of-tuzla-bosnia-and-herzegovina
#15
Amra Nadarevic Vodencarevic, Vahid Jusufovic, Meliha Halilbasic, Emina Alimanovic, Svjetlana Terzic, Emir Cabric, Aida Drljevic, Mufid Burgic
Aim: This study measured the prevalence of amblyopia in preschool and school children between 4 and 15 years of age in Tuzla, Bosnia and Herzegovina and as well and to examine its relations with anisometropia and strabismus. Methods: Children from eight daycare centers and twenty four elementary schools were screened for amblyopia by volunteer personnel (medical students), any child who failed to pass the screening examination, was referred to the ophthalmologist for complete examination at University Clinic Center Tuzla...
September 2017: Materia Socio-medica
https://www.readbyqxmd.com/read/29066355/response-to-correction-of-refractive-errors-and-hypoaccommodation-in-children-with-congenital-zika-syndrome
#16
Liana O Ventura, Linda Lawrence, Camila V Ventura, Gordon N Dutton, Polyana Marinho, Priscila F Ferro, Adriana L Gois, Natalia C Dias, Larissa Ventura, Cynthia A Moore, Lea Hyvärinen
PURPOSE: To describe the immediate response to correction of refractive errors and hypoaccommodation in children with congenital Zika syndrome (CZS). METHODS: Children born between May and December 2015 with a confirmed diagnosis of CZS and enrolled in a multidisciplinary early intervention program were included in this study. All children received a comprehensive ophthalmic examination, including dynamic retinoscopy and cycloplegic refraction. Children were prescribed their full correction if they met the criteria for refractive error, and additional plus 3...
December 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28966549/myopia-induced-by-flickering-light-in-guinea-pig-eyes-is-associated-with-increased-rather-than-decreased-dopamine-release
#17
Xiumei Luo, Bing Li, Tao Li, Yue Di, Changyue Zheng, Shunmei Ji, Yuanyuan Ma, Jie Zhu, Xuefeng Chen, Xiaodong Zhou
PURPOSE: It is well known that the dopaminergic signaling pathway plays a pivotal role in the control of axial elongation. Much research has shown that retinal dopamine (DA) is decreased in experimental myopia, but the exact alteration in DA quantity underlying the myopia model induced by flickering light (FL) has not yet been fully elucidated. Therefore, in this study, we first attempted to prove the feasibility of the myopia model induced by FL and then to determine whether and how DA and its receptors changed in myopia induced by FL...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28919296/ocular-findings-on-follow-up-in-children-who-received-phototherapy-for-neonatal-jaundice
#18
Semra Kara, Züleyha Yalniz-Akkaya, Ayça Yeniaras, Firdevs Örnek, Yıldız Dallar Bilge
BACKGROUND: To evaluate the ocular findings in children between 3 and 5 years of age who had received phototherapy in the neonatal period and to investigate whether they had phototherapy-related permanent ocular damage clinically. METHODS: The phototherapy group (n = 57) consisted of children who had undergone phototherapy for at least 24 h, and the control group (n = 43) comprised children who had not received phototherapy. Ophthalmic examinations consisted of assessment of visual acuity, convergence near point, ocular movements, ocular alignment, dynamic retinoscopy, cycloplegic refraction and biomicroscopic examination of anterior segment and posterior segment (using a 90 D lens in the latest)...
September 14, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28879667/clinical-biomicroscopy-and-retinoscopy-findings-of-keratoconus-in-a-middle-eastern-population
#19
Mohammad Naderan, Ali Jahanrad, Mahgol Farjadnia
BACKGROUND: The present work was conducted to investigate the prevalence of clinical biomicroscopy and retinoscopy findings of corneas with keratoconus (KC) at first presentation and their relationship with disease severity. METHOD: In a prospective cross-sectional study, 371 consecutive KC patients were examined by slitlamp biomicroscopy and retinoscopy at the time of diagnosis. This research evaluates the prevalence of clinical findings such as a corneal protrusion, Vogt's striae, Fleischer's ring, Munson's sign, Rizzuti's sign, corneal scars, as well as any additional KC signs such as prominent nerve fibres, scissoring reflex and Charleaux 'oil droplet' sign on retinoscopy...
January 2018: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28861357/the-evolution-of-refractive-status-in-chinese-infants-during-the-first-year-of-life-and-its-affected-factors
#20
Shu-Juan Yu, Guo-Hua Liu, Yi Liu, Jing Huang, Ming-Lei Han, Bo-Jun Zhao, Zhong-Tao Gai
AIM: To study the evolution of the refractive status and examine the affected factors in infants during the first year of life in a large sample size in China. METHODS: A total of 1258 babies (2516 eyes) aged 32wk gestational age to 1y participated in the study, including 766 premature and 492 full-term infants. First, each baby received an orthoptic examination, slit-lamp checking and fundus imaging. Patients with diseases which might affect refractive status were excluded from the cohort...
2017: International Journal of Ophthalmology
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