Search results for "Optometry"
showing 10 items of 812 documents
Refractive index and equilibrium water content of conventional and silicone hydrogel contact lenses
2006
Prova tipográfica (In Press)
Superdiluted atropine at 0.01% reduces progression in children and adolescents. A 5 year study of safety and effectiveness
2018
Abstract Objective To confirm the clinical security and effectiveness of the daily application of 0.01% superdiluted atropine eyedrops in the progression of myopia in children. Material and methods A total of 200 children 9–12 years of age were randomized into a treated group and a control without treatment. Refraction under cycloplegia was performed. Results Myopia progression of the treated group was −0.14 ± 0.35 versus −0.65 ± 0.54 in the control group without treatment. Only 2% of patients were forced to stop treatment due to side effects. Conclusion Atropine superdiluted atropine 0.01% eyedrops is effective and well tolerated, and reduced myopia progression by 25%.
Analysis and applicability of protocols to diagnosis of refractive errors in children
2018
Actualmente, una gran parte de la poblacion, especialmente de los paises en desarrollo, no tiene acceso a servicios de salud visual de calidad. La poblacion infantil es la mas afectada, dado que la maduracion del sistema visual ocurre en los primeros anos de vida, por lo cual es necesario realizar tamizaje o examen visual completo en esta poblacion para identificar anomalias ocu-lares como errores de refraccion y ambliopia. Los protocolos para el tamizaje visual o examen completo varian ampliamente en el tipo de pruebas y procedimientos, aunque la mayoria utiliza la agudeza visual (AV) y la refraccion como principales criterios diagnosticos. Estas pruebas clinicas deben tener buena calidad …
Presbyopia and the aging eye: Existing refractive approaches and their potential impact on dry eye signs and symptoms.
2020
Every part of the human body is subject to aging, including the eye. Increased prevalence of dry eye disease with age is widely acknowledged: aging threatens ocular surface homeostasis, altering the normal functioning of the lacrimal functional unit and potentially leading to signs and symptoms of dry eye. Parallelly, two additional degenerative processes take place within the crystalline lens, leading to presbyopia and cataractogenesis. With continuously increasing life expectancies both conditions are expected to impact society further. Correction strategies for presbyopia and cataracts either directly or indirectly challenge ocular surface additionally. On one hand, contact lens presbyop…
Real-life patient journey in neovascular age-related macular degeneration: a narrative medicine analysis in the Italian setting
2021
Objectives To investigate the real-life experience of patients affected by neovascular age-related macular degeneration (nAMD), in the healthcare pathway for the management of the disease, using a "patient journey" and narrative method approach. Methods The patient journey of subjects affected by nAMD was designed using a process-mapping methodology involving a team from 11 Italian centres. Subsequently, narratives were collected from nAMD patients and family members. The interviews were analyzed using the narrative medicine methodology. Results Eleven specialized retina centres across Italy were involved and 205 narratives collected. In 29% of cases, patients underestimated their symptoms …
POOLED ESTIMATES OF INCIDENCE OF ENDOPHTHALMITIS AFTER INTRAVITREAL INJECTION OF ANTI-VASCULAR ENDOTHELIAL GROWTH FACTOR AGENTS WITH AND WITHOUT TOPI…
2017
Purpose: To assess the effect of topical antibiotic prophylaxis on postoperative endophthalmitis after intravitreal injection of anti-vascular endothelial growth factor agents.Methods: A systematic literature search was performed from inception to March 2016 using PubMed, Medline, Web of Science, Embase, and the Cochrane Library, to identify articles that reported cases of endophthalmitis after intravitreal injection of anti-vascular endothelial growth factor agents. We used a pooled analysis to estimate the incidence of cases of endophthalmitis who developed after injections performed with and without topical antibiotic prophylaxis. We used regression analysis to explore the effects of stu…
Eccentric fixation measurements using visuoscopy and Macula Integrity Tester (MIT) in children with amblyopia
2021
The aim of the work was to compare measurements of eccentric fixation in children with amblyopia using two different methods, a traditional visuoscopy and MIT. Monocular fixation was evaluated using visuoscopy and MIT in 16 patients (from 5 to 9 years old). Measurements were started with the better seeing eye to compare the results obtained with the amblyopic eye. All study participants were selected with anisometropic and refractive amblyopia. Visuoscopy is simpler than MIT and less dependent on patient responses, so visioscopy can be used for young children who have not yet acquired verbal skills. Children over the age of 5 can more easily understand the MIT method and get more reliable r…
<title>The perception of isoluminant coloured stimuli of amblyopic eye and defocused eye</title>
2008
In routine eye examination the visual acuity usually is determined using standard charts with black letters on a white background, however contrast and colour are important characteristics of visual perception. The purpose of research was to study the perception of isoluminant coloured stimuli in the cases of true and simulated amlyopia. We estimated difference in visual acuity with isoluminant coloured stimuli comparing to that for high contrast black-white stimuli for true amblyopia and simulated amblyopia. Tests were generated on computer screen. Visual acuity was detected using different charts in two ways: standard achromatic stimuli (black symbols on a white background) and isoluminan…
Temporal multiplexing with adaptive optics for simultaneous vision.
2016
We present and test a methodology for generating simultaneous vision with a deformable mirror that changed shape at 50 Hz between two vergences: 0 D (far vision) and −2.5 D (near vision). Different bifocal designs, including toric and combinations of spherical aberration, were simulated and assessed objectively. We found that typical corneal aberrations of a 60-year-old subject changes the shape of objective through-focus curves of a perfect bifocal lens. This methodology can be used to investigate subjective visual performance for different multifocal contact or intraocular lens designs.
Kosteneffektivitätsanalyse der Versorgung von Kataraktpatienten mit monofokalen Intraokularlinsen aus Sicht der Leistungserstatter
2003
BACKGROUND Data on the cost effectiveness of cataract surgery with respect to the German statutory health insurance system are hardly available. Hence the increase in visual acuity as primary efficacy endpoint, order of posterior capsule opacification as primary complication endpoint and direct cost for supplementation with monofocal intraocular lenses have been assessed via meta-analyses to evaluate the procedure's cost effectiveness from the perspective of the German statutory health insurance system. MATERIAL AND METHODS Using the medical internet database MEDLINE two meta-analyses on publications between 1995 and 2002 were carried out, one estimating the gained increase in visual acuity…