نتایج جستجو برای: uncorrected visual acuity

تعداد نتایج: 365427  

Journal: :Investigative ophthalmology & visual science 2008
Nathan Congdon Yunfei Wang Yue Song Kai Choi Mingzhi Zhang Zhongxia Zhou Zhenling Xie Liping Li Xueyu Liu Abhishek Sharma Bin Wu Dennis S C Lam

PURPOSE To evaluate visual acuity, visual function, and prevalence of refractive error among Chinese secondary-school children in a cross-sectional school-based study. METHODS Uncorrected, presenting, and best corrected visual acuity, cycloplegic autorefraction with refinement, and self-reported visual function were assessed in a random, cluster sample of rural secondary school students in Xi...

2013
Jérôme C Vryghem Steven Heireman

PURPOSE To evaluate the subjective and objective visual results after the implantation of a new trifocal diffractive intraocular lens. METHODS A NEW TRIFOCAL DIFFRACTIVE INTRAOCULAR LENS WAS DESIGNED COMBINING TWO SUPERIMPOSED DIFFRACTIVE PROFILES: one with +1.75 diopters (D) addition for intermediate vision and the other with +3.50 D addition for near vision. Fifty eyes of 25 patients that w...

2011
George D Kymionis Dimitra M Portaliou Vasilios F Diakonis Alexandra E Karavitaki Sophia I Panagopoulou Mirko R Jankov II Efekan Coskunseven

A thirty-nine year old man was referred to our institute due to progressive decreased visual acuity five years after bilateral Laser in situ Keratomileusis (LASIK). Topography revealed signs of post - LASIK ectasia. Patients' left eye was treated with simultaneous Topography Guided Photorefractive Keratectomy (PRK) followed by Corneal Collagen Cross Linking (CXL). Twelve months after the combin...

Journal: :Journal of refractive surgery 2015
Heather M Weissman J Bradley Randleman

PURPOSE To describe LASIK flap amputation as a therapeutic option for patients with atypical refractory flap complications. METHODS Case series and literature review. RESULTS Seven eyes of 6 patients underwent flap amputation for various atypical indications, including non-infectious flap/interface opacity (3 patients), irregular astigmatism on the flap surface (3 patients), and chronic pai...

Journal: :Collegium antropologicum 2011
Maja Bohac Nikica Gabrić Marija Anticić Natasa Draca Iva Dekaris

This study reports early outcomes of a cohort of presbyopic patients treated with Intracor. The study took place from December 2010 to May 2011 and was conducted in University Eye Hospital "Svjetlost", Zagreb, Croatia. 95 eyes were enrolled in this prospective clinical trial (49 patients with non dominant eye and 23 with bilateral treatment). All patients gave informed consent prior to enrollme...

Journal: :Journal of cataract and refractive surgery 2005
Guy M Kezirian Bruce Drum Malvina Eydelman

PURPOSE To present a format for reporting outcomes of aberrometer-guided refractive procedures. SETTING SurgiVision Consultants, Inc., Scottsdale, Arizona, and Food and Drug Administration, Center for Devices and Radiological Health, Rockland, Maryland, USA. METHODS Reports of standard refractive and visual outcomes (uncorrected visual acuity, manifest refractive spherical equivalent, best ...

2006
Nadja Geipert

WAVEFRONT-guided photorefractive keratectomy (PRK) induces fewer higher-order aberrations than wavefrontguided LASIK, while the latter induces fewer higher order aberrations than conventional or optimised LASIK, suggest the preliminary results of two new studies presented at the XXIII Congress of the ESCRS. “In my practice, I employ wavefront guided technology in every patient that is eligible,...

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...

2013
Cristina Peris-Martínez Carmen García-Domene

METHOD: Prospective, non-comparative study of 18 patients (36 eyes) in whom a Synchrony® dual-optic lens was implanted bilaterally following cataract surgery. All patients were studied preoperatively, and 1, 3 and 6 months postoperatively. The following measurements were taken: Uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA) for distance, intermediate and near vision, a...

Journal: :بینا 0
محمدعلی جوادی ma javadi ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم سپهر فیضی s feizi ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم حمیدرضا معین hr moein ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم لیلا غیاثیان l qiasian ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم

purpose: to assess the results of combined penetrating keratoplasty and cataract extraction by extracapsular extraction versus phacoemulsification and to compare outcomes and complications. methods: in this interventional retrospective study, 76 eyes that had undergone triple surgery were included. cataract surgery was done in two different methods of extracapsular extraction and phacoemulsific...

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