نتایج جستجو برای: near visual acuity

تعداد نتایج: 615637  

Journal: :Journal of cataract and refractive surgery 2013
Andreia Martins Rosa Maria Fátima Loureiro Silva Conceição Lobo Joaquim Bernardes Mira Cláudia Louro Farinha João Alberto Póvoa Miguel Castelo-Branco Joaquim Neto Murta

PURPOSE To compare visual function after bilateral implantation of multifocal Lentis Mplus LS-312 (Group A) or Acrysof Restor SN6AD1 (Group B) intraocular lenses (IOLs). SETTING Ophthalmology Unit, Centro Hospitalar e Universitário de Coimbra, and Visual Neuroscience Laboratory, IBILI, Faculty of Medicine, University of Coimbra, Coimbra, Portugal. DESIGN Comparative case series. METHODS P...

2017
Firouzeh Fereydouni Vahid Qasemi Siamak Moradian SeyyedMehdi Tabatabaee

Purpose To evaluate the effect of acupuncture therapy on visual function of patients with retinitis-pigmentosa (RP). Methods In a prospective study, 23 RP subjects received ten sessions of body-acupuncture. Pre and post-treatment evaluations included best corrected visual acuity (BCVA), uncorrected visual acuity (UCVA), near visual acuity (NVA), and static 30-2 perimetry. Results UCVA, BCVA...

2013
Mary K. Kaiser

Human vision is quantified through the use of standardized clinical vision measurements. These measurements typically include visual acuity (near and far), contrast sensitivity, color vision, stereopsis (a.k.a. stereo acuity), and visual field periphery. Simulator visual system performance is specified in terms such as brightness, contrast, color depth, color gamut, gamma, resolution, and field...

Journal: :The British journal of ophthalmology 1994
C Engler B Sander J Villumsen H Lund-Andersen

The first double masked placebo controlled trial of interferon alfa-2a for the treatment of overt choroidal neovascular membranes is presented. A total of 43 consecutive patients were randomised to double masked treatment with either interferon alfa-2a, 3 million IU subcutaneously three times a week or matching placebo, for a period of 8 weeks. End of study changes from baseline in distance and...

Journal: :بینا 0
سیدمرتضی انتظاری m entezari دانشگاه علوم پزشکی شهید بهشتی حسین محمدربیع h mohammad rabei دانشگاه علوم پزشکی شهید بهشتی محمد محسنی m mohsseni badalabadi

purpose: to determine factors that affect and predict final visual acuity, retinal attachment, and ocular survival after open-globe injuries. methods: one-hundred sixteen eyes with open globe injuries were evaluated longitudinally from september 2001to february 2004. age, sex, involved eye, best corrected visual acuity (bcva), afferent pupillary defect (apd), size and location of laceration, ca...

Journal: :Displays 2011
Akihiro Sugiura Masaru Miyao Tetsuya Yamamoto Hiroki Takada

Please cite this article in press as: A. Sugiura et people of visual acuity and asthenopia, Display The abnormal contraction of ciliary muscles due to the performance of a near visual task for several hours causes various vision problems such as asthenopia and visual loss. However, these problems can be resolved by activating the muscles by alternately repeating negative and positive accommodat...

2016
Wolfgang Brezna Kirsten Lux Nikolaus Dragostinoff Christian Krutzler Nicole Plank Rainer Tobisch Agnes Boltz Gerhard Garhöfer Reinhard Told Katarzyna Witkowska Leopold Schmetterer

PURPOSE The visual performance of monofocal, bifocal, and trifocal intraocular lenses was evaluated by human individuals using a vision simulator device. This allowed investigation of the visual impression after cataract surgery, without the need actually to implant the lenses. METHODS The randomized, double-masked, three-way cross-over study was conducted on 60 healthy male and female subjec...

Background Visual acuity, like many other health-related problems, does not have an equal distribution in terms of socio-economic factors. We conducted this study to estimate and decompose economic inequality in presenting visual acuity using two methods and to compare their results in a population aged 40-64 years in Shahroud, Iran.   Methods: The data of 5188 participants in the first phase o...

2017
Cornelis Verdoorn

PURPOSE To compare the visual performance and optical quality after Raindrop Near Vision Inlay implantation or monovision LASIK for the correction of presbyopia. MATERIALS AND METHODS In this retrospective case-series study, patients previously treated in the nondominant eye with monovision LASIK were compared with patients previously implanted with Raindrop Near Vision Inlay. The study enrol...

Journal: :The Lancet Global Health 2021

We would like to express our gratitude Matthew Burton and colleagues for the Commission on Global Eye Health (April, 2021),1Burton MJ Ramke J Marques AP et al.The Lancet Health: vision beyond 2020.Lancet Glob Health. 2021; 9: 489-551Summary Full Text PDF PubMed Scopus (50) Google Scholar which highlights magnitude of challenge. As a plea we mention glaucomas. feel this preventable cause blindne...

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