نتایج جستجو برای: intraocular lens

تعداد نتایج: 64534  

Journal: :The British journal of ophthalmology 2005
G Sauder R F Degenring B Kamppeter P Hugger

AIM To assess the accommodative power of a new foldable monofocal intraocular lens. METHOD A prospective randomised non-masked clinical interventional study. The study included 40 patients attending the hospital for cataract surgery and who were randomly distributed into a study group receiving a new foldable monofocal intraocular lens with flexible haptics, and a control group receiving a st...

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...

Journal: :Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde 2011
Andrew Bastawrous Craig Parkes Som Prasad

Phacoemulsification with an intraocular lens implant is a safe and effective means of correction of visual loss from cataract. The high frequency of this procedure world wide means inevitable direct surgical complications will be numerous even though infrequent. The approach to correcting aphakia following complicated cataract surgery is dependent on multiple factors including the degree to whi...

2015
Aditya Kelkar Rachana Shah Jai Kelkar Shreekant Kelkar Ekta Arora

Sutureless, glueless, scleral fixation of an intraocular lens is a known technique of fixing a lens in the scleral pockets. However, this technique is applied to single-piece and toric lenses instead of 3-piece lenses, allowing the advantage of the use of premium lenses in patients with poor capsular support. Favourable results without complications of pigment dispersion, iris transillumination...

2011
Priyanka Sood Maria A Woodward

Cataract surgery has evolved. The goal of the surgeon includes both restoration of vision and refinement of vision. Patients' desire for spectacle independence has driven the market for presbyopia-correcting cataract surgery and development of novel intraocular lens (IOL) designs. The Tecnis(®) Multifocal Intraocular Lens incorporates an aspheric, modified anterior prolate IOL with a diffractiv...

Journal: :Biomedical optics express 2017
Maria S Millán Fidel Vega

We describe a first-and-second-diffractive-order intraocular lens ((1st,2nd)DIOL) within the class of hybrid refractive-diffractive designs for intraocular lenses (IOLs) and analyse its properties of focus extension and compensation of longitudinal chromatic aberration (LCA), particularly for lenses with low addition. Power, energy efficiency and their wavelength dependence are extended from mo...

Journal: :بینا 0
عزت صمدی پور e samadipoor sabzevar university of medical sciences, sabzevar, iranدانشکده پیراپزشکی- دانشگاه علوم پزشکی سبزوار- سبزوار- ایران علی قاسمی آریان a ghasemi arian sabzevar university of medical sciences, sabzevar, iranدانشگاه علوم پزشکی سبزوار- سبزوار- ایران

purpose: to report the development of cataract after corneal damage by dungle beetle prongs. case report: a 28 year-old man, resident of the village chah setareh, sabzevar, presented complaining of trauma to the right eye with the dangle beetle while motorcycling. slit lamp examination revealed six corneal perforations, hyphema (50% of anterior chamber) percent, iris sphincter rupture, and rupt...

2015
Hui Guo Xinyi Wu Keli Cai Zhi Qiao

BACKGROUND To report the diagnostic features and management strategy of a rare case of Weill-Marchesani syndrome with advanced glaucoma and corneal endothelial dysfunction. CASE PRESENTATION A patient presented with advanced glaucoma with an intraocular pressure of 49 mmHg in the left eye, and subsequently received trabeculectomy to control the intraocular pressure. Surprisingly, slit lamp ex...

Journal: :Applied optics 1993
L Carretero C González A Fimia I Pascual

We studied the spherical aberration of an intraocular lens, using third-order theory, ray tracing, and bench measurements by the Ronchi test. Good agreement was obtained for these three methods of investigation. In particular we found that the Ronchi test is an accurate method for quantifying this aberration.

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