نتایج جستجو برای: preoperative astigmatism
تعداد نتایج: 57997 فیلتر نتایج به سال:
PURPOSE To compare surgically induced corneal refractive change following trabeculectomy with the nonpenetrating trabecular filtering surgeries with and without implant. SETTING Department of Ophthalmology, Ege University School of Medicine, Izmir, Turkey. METHODS A consecutive series of 34 patients (34 eyes) with uncontrolled open-angle glaucoma had trabecular filtering surgery. Patients w...
PURPOSE To evaluate refractive, visual, and aberrometric changes in corneas with pellucid marginal degeneration (PMD) implanted with intracorneal ring segments (ICRS) during a 6-month follow-up. DESIGN Retrospective, consecutive case series. PARTICIPANTS We included 21 consecutive eyes of 15 patients ranging in age from 21 to 73 years old and with a diagnosis of PMD. This diagnosis was made...
PURPOSE To compare the astigmatic power of toric intraocular lenses (IOLs) obtained from the AcrySof, TECNIS, and iTrace toric calculator in patients with preoperative with-the-rule (WTR) or against-the-rule (ATR) corneal astigmatism. MATERIALS AND METHODS Fifty eyes with cataract and corneal astigmatism greater than 0.75 diopters were enrolled in each group (WTR and ATR). Keratometric values...
AIM This study aims to determine the effect of pterygium excision on the degree of corneal induced astigmatism and visual acuity. PATIENTS AND METHODS This was a prospective interventional study conducted between September 2012 and June 2013. Consecutive patients with pterygium who met the inclusion criteria were recruited into the study. They had a basic eye examination, and those with exist...
Abstract Background To evaluate clinical outcomes after full-thickness astigmatic keratotomy (FTAK) combined with small-incision lenticule extraction (SMILE) in eyes high astigmatism. Methods This study comprised 75 of 43 patients over 4.0 diopters (D) astigmatism who were treated SMILE FTAK. Visual acuities and refractive measurements evaluated at 1 month FTAK, 1, 6, 12, 24 months SMILE. Vecto...
PURPOSE To assess the postoperative outcomes of a novel toric multifocal in traocular lens (IOL) in patients with cataract and corneal astigmatism. METHODS This prospective nonrandomized study included patients with cataract, corneal astigmatism, and a motivation for spectacle independence. In all patients, a Rayner M-flex® T toric IOL was implanted in the capsular bag. Three months after sur...
Purpose. To evaluate the refractive and the quality of vision outcomes of toric IOL implantation in patients with low astigmatism. Design. Prospective study of single-arm. Methods. Patients with corneal astigmatism range from 0,75 D to 1,5 D and cataract that underwent cataract surgery with toric IOL. The measurements were performed preoperatively and 6 weeks after the surgery. Patients were ev...
PURPOSE To determine the effect of upper eyelid platinum chain implantation, with the pretarsal fixation technique, on corneal astigmatism. METHODS This is a prospective, cohort study. Fifteen eyes of 15 patients underwent upper eyelid platinum chain implantation, with the pretarsal fixation technique, for facial nerve palsy. Information recorded included patient demographics, etiology for fa...
PurposeTo investigate corneal astigmatism (CA) reduction and optical quality after surface-penetrating femtosecond laser arcuate keratotomies (Femto AK) considering anterior (CAant) posterior curvature (CApost), total refractive power (CAtot), higher-order aberrations (HOAs) through 1 year.DesignProspective interventional case series.MethodsSetting: Department of Ophthalmology, Medical Universi...
Abstract Background To evaluate early optical quality outcomes after small-incision lenticule extraction (SMILE) surgery for correcting high myopic astigmatism. Methods This retrospective study enrolled 55 eyes from 37 patients who had preoperative astigmatism of ≥2.00 diopters (D) been treated with SMILE surgery. Preoperatively, the mean cylinder was − 2.41 ± 0.54 D (range, 2.00 to 4.50 D). Th...
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