نتایج جستجو برای: corrected visual acuity

تعداد نتایج: 405684  

Journal: :journal of current ophthalmology 0
حسن هاشمی hassan hashemi حمیدرضا نیک بین hamid reza nikbin مهدی خبازخوب mehdi khabazkhoob

purpose : to compare visual quality in patients receiving alcon acrysof restor multifocal versus acrysof sa60at monofocal intraocular lenses (iol) methods : in this interventional study, patients with senile cataract undergoing surgery were enrolled. the age of the patients ranged between 40 and 85 years, and their potential preoperative vision was 20/30 or better. in all patients phacoemulsifi...

A 41-year-old man was referred with a complaint of visual loss in his left eye and his best corrected visual acuity was 20/80. Slit lamp examination showed arborizing conjunctival vessels and dry eye. Fundus examination and fluorescein angiography revealed a non-ischemic central retinal vein occlusion. Cardiovascular, rheumatologic, and hematologic work up showed no abnormal findings. An ascert...

Journal: :journal of current ophthalmology 0
حسن هاشمی hassan hashemi علیرضا حبیب اللهی ali-reza habibollahi

purpose : to present conductive keratoplasty (ck) as a new procedure to correct residual hyperopia and astigmatism after phacoemulsification surgery and to evaluate its predictability, safety and stability methods : fifteen eyes of 13 patients with preoperative hyperopia +0.75 to +3.00 d and or astigmatism -0.75 to -3.00 d were enrolled into the study and underwent ck treatment. at the 1st and ...

2017
Veronica Vargas-Fragoso Jorge L. Alió

ABSTRACT The main purpose of this review is to compare and analyze the results of the main PresbyLASIK approaches; central and peripheral. SUMMARY A comprehensive research was conducted in PUBMED using keywords like "presbyopia correction", "PresbyLASIK", "Corneal multifocality", "Laser blended vision". We reviewed the PresbyLASIK technique, uncorrected distance visual acuity (UDVA), correcte...

Journal: :The British journal of ophthalmology 2005
L Xu J Li T Cui A Hu Y Zheng Y Li B Sun B Ma J B Jonas

AIM To evaluate prevalence and demographic associations of visual impairment in an urban and rural population in northern China. METHODS In the Beijing Eye Study, a population based cohort study in northern China, visual acuity was assessed for 8876 eyes (4438 subjects) according to a response rate of 83.4%. The study was divided into a rural part (1972 subjects) and an urban part (n=2466). M...

Journal: :Journal of cataract and refractive surgery 2014
Eloy A Villegas Encarna Alcón Pablo Artal

PURPOSE To evaluate how small amounts of astigmatism affect visual acuity and the minimum astigmatism values that should be corrected to achieve maximum visual performance. SETTING Optics Laboratory, University of Murcia, Murcia, Spain. DESIGN Case series. METHODS A wavefront sensor was used to measure astigmatism and higher-order aberrations (HOAs) in normal young eyes with astigmatism r...

ژورنال: بینا 2019
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Purpose: To report a case of Purtscher’s Retinopathy in a patient with falling down. Case Report: A 25-year-old man with no history of specific disease referred to the ophthalmology clinic of Imam Hossein Hospital 2 days after falling due to a sudden vision loss in his right eye. Best-corrected visual acuity was counting finger 1m in the right and 10/10 in the left eye and Marcus Gunn pupil was...

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...

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