نتایج جستجو برای: mean keratometry

تعداد نتایج: 587368  

ژورنال: دانشور پزشکی 2010
قاسمی‌فلاورجانی, دکتر خلیل, جوشقانی, دکتر محمود , فروتن, دکتر علیرضا , قاسمی, دکتر حسن , مادرشاهی, دکتر حجت , نیکبخت, دکتر بهزاد ,

Background and Objective: Astigmatism is a common complication of penetrating (PK) and Lamellar (LK) keratoplasty that may cause surgical failure due to visual disturbances. In this study, the efficacy of scar revision just at the surgical incision was evaluated. Materials and Methods: In this prospective interventional case-series study, scar revision was performed in nineteen post-PK or LK as...

2017
Sahar Mojaled Nobari Consuelo Villena

Purpose: To assess the stability of visual and refractive outcomes that was compared between three and 12 months after MyoRing implantation in moderate and severe keratoconus Methods: This study included 54 eyes of 50 patients (27 males and 23 females) with stage II and III keratoconus who underwent MyoRing (Dioptex GmbH) implantation. Clinical outcomes including uncorrected distance visual acu...

Journal: :International journal of ophthalmology 2013
Leonardo Torquetti Guilherme Ferrara Franklin Almeida Leandro Cunha Paulo Ferrara Jesús Merayo-Lloves

AIM To evaluate the clinical outcomes after Ferrara intrastromal corneal ring segments (ICRS) reoperation in patients with keratoconus. METHODS A total of 37 keratoconus eyes implanted with intrastromal corneal ring segments, which had an ICRS exchange, addition, reposition or removal were evaluated. Uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), keratometry (K), asphe...

Journal: :The British journal of ophthalmology 2008
S Kaushal V Jhanji N Sharma R Tandon J S Titiyal R B Vajpayee

AIMS Evaluation of a new surgical technique for the management of corneal ectasia with peripheral corneal involvement. METHODS Twelve eyes of 12 patients with corneal ectasias and peripheral corneal thinning requiring surgical intervention, including eight patients with combined keratoconus and PMD and four patients of keratoglobus, were enrolled for the study in a tertiary care hospital. All...

2017
Mahdieh Esmaeilnezhad Alehe Seyyedrasooli

Background and aims: Keratoconus is characterized by corneal ectasia and irregular astigmatism, which can lead to diminished vision and corneal scarring. Keratoconus is a condition that causes corneal ectasia and reduced vision in young adults. A proportion of these patients have progressive disease requiring corneal transplantation. Methods: The databases searched included OVID MEDLINE, MEDLIN...

Journal: :Investigative ophthalmology & visual science 2011
Lee A Hall Graeme Young James S Wolffsohn Colleen Riley

PURPOSE To evaluate the influence of peripheral ocular topography, as evaluated by optical coherence tomography (OCT), compared with traditional measures of corneal profile using keratometry and videokeratoscopy, on soft contact lens fit. METHODS Ocular surface topography was analyzed in 50 subjects aged 22.8 years (SD ±5.0) using videokeratoscopy (central keratometry, corneal height, and sha...

2017
Mortada A Abozaid

Purpose The purpose of this study was to assess the safety and efficacy of femtosecond laser-assisted Keraring implantation followed by transepithelial accelerated corneal collagen cross-linking (CXL) for the treatment of keratoconus in children with vernal keratoconjunctivitis (VKC). Study design This is a prospective interventional non-comparative case series. Patients and methods Eightee...

Journal: :The British journal of ophthalmology 1986
A J Geerards E Hassmann W H Beekhuis L Remeyer G van Rij W J Rijneveld

AIMS A total of 97 triple procedures performed over a 6 year period were studied retrospectively to determine the best approach to calculate intraocular lens power. METHODS The cases were divided into two diagnostic categories. RESULTS After 1 year best corrected visual acuity was 20/40 or better in 37.5% of the cases of the 'modified group'. This group consists of patients with the diagnos...

Journal: :Cornea 2016
Hani Sakla Wassim Altroudi Gonzalo Munoz Yousef Sakla

PURPOSE To study the evolution of visual and refractive outcomes through the first year after simultaneous topography-guided photorefractive keratectomy (t-PRK) and corneal collagen cross-linking (CXL) in keratoconus. METHODS This retrospective case series included 85 eyes of 66 patients with a mean age of 26.3 ± 5.7 years, which underwent simultaneous t-PRK with accelerated CXL. Patients wer...

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