نتایج جستجو برای: lenticular astigmatism

تعداد نتایج: 4448  

2011
Hiram Larangeira de Almeida

Flegel's disea se, also known as hyper ke ra to sis len ti cu la ris pers tans, is a rare skin disea se cha rac te ri zed by small red dish-brown asympto ma tic hyper ke ra to tic papu les usually loca ted on the lower extre mi ties. The his to pa tho lo gi cal fea tu res are hype ror tho ke ra to sis, epi der mal atrophy and band-like inflam ma tory infil tra te in the super fi cial der mis. T...

Journal: :Journal of cataract and refractive surgery 2004
Marjolijn C Bartels Gabriel van Rij Gregorius P M Luyten

We present a patient with marginal corneal degeneration and corneal astigmatism of more than 10.0 diopters (D). A toric phakic intraocular lens (IOL) of 7.0 D cylindrical power was implanted in both eyes to correct the high astigmatism. An uncorrected visual acuity of 20/40 was achieved in both eyes, and the best corrected visual acuity improved by 4 Snellen lines to 20/20 in both eyes. Refract...

2017
Maged Alnawaiseh Lars Zumhagen André Rosentreter Nicole Eter

Purpose. To evaluate changes in anterior, posterior, and total corneal astigmatism in patients after Descemet membrane endothelial keratoplasty (DMEK). Methods. We retrospectively included 29 eyes of 23 patients (age 67.6 ± 9.8 years, 13 female, 10 male) after DMEK surgery. The magnitude and axis orientation of anterior, posterior, and total corneal astigmatism before and after DMEK were determ...

2015
Tolga Kocatürk Erol Erkan Sait Eğrilmez Harun Çakmak Sema O. Dündar Volkan Dayanir

PURPOSE To evaluate surgically induced astigmatism (SIA) after an intravitreal ranibizumab (IVR) injection. METHODS Fifty eight eyes of 58 patients who underwent IVR injection due to age-related macular degeneration (wet form) or macular edema were included in this study. Patients' pre- and postoperative detailed ophthalmologic examinations were done and topographic keratometric values (K1, K...

2010
Na Mi Kim Jae Ho Jung Hee Young Choi

PURPOSE To evaluate the effect of epiblepharon surgery on visual acuity and with-the-rule astigmatism in children compared to patients without surgical treatment. METHODS We undertook a retrospective case control study and reviewed the charts of 202 eyes treated with epiblepharon surgery and of 142 eyes without surgery. The surgical procedure for epiblepharon correction used rotating suture t...

Journal: :American journal of ophthalmology 2007
Jenny M Ip Annette Kifley Kathryn A Rose Paul Mitchell

PURPOSE To examine the impact of parental astigmatism on astigmatic error and ocular biometric parameters in children. DESIGN Population-based cross-sectional study. METHODS Six-year-old children (n = 1,741; 78.9% response) and 12-year-old children (n = 2,367; 75.3% response) underwent a comprehensive eye examination, including cycloplegic autorefraction and ocular biometry. Astigmatism was...

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: :Archivos de la Sociedad Espanola de Oftalmologia 2007
I Coloma-González M González-Herrera E Mengual-Verdú J R Hueso-Abancens

PURPOSE To evaluate the reduction of pre-existing corneal astigmatism at the time of cataract surgery with limbal relaxing incisions (LRIs). METHODS A prospective study of two groups of patients (treatment and control) with pre-existing astigmatism>or=1D was performed. The 30 patients in the control group had a temporal clear corneal phacoemulsification and the 32 patients of treatment group ...

2010
Muniyan Sakthivel Rajan Elanchezhian Philip A. Thomas Pitchairaj Geraldine

PURPOSE To determine putative alterations in the major lenticular proteins in Wistar rats of different ages and to compare these alterations with those occurring in rats with selenite-induced cataract. METHODS Lenticular transparency was determined by morphological examination using slit-lamp biomicroscopy. Alterations in lenticular protein were determined by sodium dodecyl sulfate-PAGE (SDS-...

Journal: :Journal of refractive surgery 2000
M S Kapadia R Krishna S Shah S E Wilson

PURPOSE To retrospectively evaluate the effectiveness of paired, arcuate transverse keratotomy (Arc-T) performed prior to or after photorefractive keratectomy (PRK) to correct low to moderate amounts of natural or laser-induced astigmatism. METHODS Spherical PRK was performed in 730 eyes for myopia of -1.00 to -7.00 D. PRK with arcuate transverse keratotomy was performed in 150 of these eyes;...

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