نتایج جستجو برای: posterior corneal elevation

تعداد نتایج: 208126  

Journal: :Journal of refractive surgery 2018
Mohamed Shafik Shaheen Mohamed M Lolah David P Piñero

PURPOSE To evaluate the clinical results of epitheliumoff corneal cross-linking (CXL) during a 7-year follow-up. METHODS This retrospective, non-randomized, single-center interventional study enrolled 34 consecutive eyes of 24 patients with progressive keratoconus undergoing CXL surgery with epithelium removal. Visual, refractive, corneal topographic, pachymetric, and anterior segment changes...

2017
Elisabeth Patsoura

This mini review focuses on the current knowledge on posterior corneal astigmatism based on the latest research. In the first part the definition, the magnitude as well as methods and devices for its evaluation are presented. Posterior corneal astigmatism measurement is improving as new technologies are evolving. It is now shown that the posterior corneal surface acts as a negative lens and as ...

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...

2012
Siamak Zarei-Ghanavati Mohammad-Ali Javadi Shahin Yazdani

PURPOSE To report an interesting case of concomitant bilateral Terrien's marginal degeneration-like corneal ectasia and posterior polymorphous corneal dystrophy in a young man with quiescent rheumatoid arthritis. CASE REPORT A 24-year-old man with history of rheumatoid arthritis presented with bilateral decreased vision since four years ago. Slit lamp examination revealed bilateral circumfere...

2015
Corey Waldman Vishwanath Srinagesh Laura Green Reid A. Waldman

The purpose of present study is to discuss the clinical findings and management options of posterior polymorphous corneal dystrophy and to review the current literature on this rare entity. We report a case of asymptomatic posterior polymorphous corneal dystrophy. Posterior polymorphous corneal dystrophy is a rare, familial clinical entity with subtle findings that are important to recognize, a...

2011
Paul Ernest Warren Hill Richard Potvin

Purpose. To compare the surgically induced astigmatism from clear corneal and square posterior limbal incisions at the time of cataract surgery. Methods. Surgically induced astigmatism was calculated for a set of eyes after cataract surgery using a temporal 2.2 mm square posterior limbal incision. Results were compared to similar available data from surgeons using clear corneal incisions of sim...

Journal: :International journal of ophthalmology 2017
Gabor Nemeth Eszter Szalai Ziad Hassan Agnes Lipecz Zsuzsa Flasko Laszlo Modis

AIM To analyze the correlations between ocular biomechanical and biometric data of the eye, measured by Scheimpflug-based devices on healthy subjects. METHODS Three consecutive measurements were carried out using the corneal visualization Scheimpflug technology (CorVis ST) device on healthy eyes and the 10 device-specific parameters were recorded. Pentacam HR-derived parameters (corneal curva...

Objectives: The purpose of this study was to compare scapular kinematics during elevation phase of abduction, flexion, and scapular plane elevation phase between fifteen persons with shoulder impingement syndrome (SIS) and thirteen persons without it. Methods: Values of scapular kinematics include scapular superior and lateral translations, upward rotation, external rotation, and posterior t...

Journal: :Nepalese journal of ophthalmology : a biannual peer-reviewed academic journal of the Nepal Ophthalmic Society : NEPJOPH 2009
A K Sharma

A case of posterior corneal abscess with extension into the anterior chamber, in the presence of an intact corneal epithelium and clear anterior corneal stroma, occurring in a young patient is described. The patient responded to treatment with systemic and topical acyclovir. The diagnosis of presumed herpes simplex keratitis was made. We report this unusual presentation of ocular herpes manifes...

Journal: :Journal of Optometry 2021

To compare the efficacy of epithelium-off corneal collagen crosslinking (CXL) with transepithelial CXL in patients progressive keratoconus a follow-up 3 years, taking into account patients’ age and location ectasia. In this prospective study participated 64 eyes were included long-term study, which 31 treated by 33 CXL. All 36 months evaluated for visual variables (corrected distance acuity (CD...

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