نتایج جستجو برای: corneal biomechanic

تعداد نتایج: 28495  

2013
Julia Song David Yu Alice Song Trisa Palmares Harold S. Song Michael Song

Aims: Selective laser trabeculoplasty (SLT) (Lumenis, Santa Clara, CA) was developed in 1999 as a means to lower IOP in patients with glaucoma. It is a relatively safe procedure. We report a rare side effect of corneal opacity and stromal haze with corneal thinning and hyperopic shift following SLT. Presentation of Case: Case report. Results: A 50 year-old Asian male who underwent SLT OD develo...

Journal: :Acta Mechanica Sinica 2023

The article “On methodology and application of smoothed particle hydrodynamics in fluid, solid biomechanics” (DOI: 10.1007/s10409-022-22185-x), written by Fei Xu, Jiayi Wang, Yang Yang, Lu Zhen Dai Ruiqi Han, was originally published Online first without open access. After publication volume [39], Article number [722185], the authors decided to opt for Open Choice make an Access publication. Th...

Arturo Ramirez-Miranda Christine V. Nguyen Martin N. Nakatsu2 Siamak Zarei-Ghanavati1 Sophie X. Deng

Introduction To evaluate the expression patterns of cytokeratin (K) 12, 13, and 19 in normal epithelium of the human ocular surface to determine whether K13 could be used as a marker for conjunctival epithelium. Methods: Total RNA was isolated from the human conjunctiva and central cornea. Those transcripts that had threefolds or higher expression levels in the conjunctiva than the cornea wer...

Journal: :The British journal of ophthalmology 2000
C Akimune H Watanabe N Maeda M Okada S Yamamoto A Kiritoshi Y Inoue Y Shimomura Y Tano

AIMS To investigate the frequency of corneal guttata in patients with a corneal dystrophy resulting from an Arg124His (R124H) mutation of betaig-h3 gene. METHODS Slit lamp examination was performed on 30 eyes with corneal dystrophy from a genetically confirmed betaig-h3 R124H mutation and on 50 age matched control eyes. The stage of the corneal dystrophy was classified as stage 0, I, or II an...

اکرم قائم مقامی, ,

ExtractDefective corneas are the leading cause of blindness world wide and the second leading cause, after diabetic retinopathy,of blindness in the united state , afflicting 30000 americans each year. happily, nearly 95 percent of those who have corneal transplantations( in 1985 they numbered,26300) regain their sight. The cornea is a transparent, a vascular, dim-sized tissue continious with th...

Journal: :Stem cells 2015
Aya Amitai-Lange Anna Altshuler Jeffrey Bubley Noora Dbayat Beatrice Tiosano Ruby Shalom-Feuerstein

Accumulating evidence supports the dogma that the corneal epithelium is regenerated by stem cells located exclusively in the limbal niche, at the corneal periphery. Accordingly, limbal stem cells (LSCs) give rise to progenitors that proliferate and migrate centripetally to repopulate the corneal epithelium, which has a short turnover. Moreover, LSC loss leads to corneal opacity and blindness, w...

Journal: :Journal of refractive surgery 2012
Ramon Gutiérrez Inma Lopez Cesar Villa-Collar José Manuel González-Méijome

PURPOSE To evaluate the changes in corneal transparency and thickness measured objectively using Pentacam Scheimpflug (Oculus Optikgeräte GmbH) corneal tomography (densitometry) after corneal cross-linking (CXL). METHODS Twenty-two eyes from 15 patients with keratoconus underwent CXL. Corneal thickness and curvature as well as lens and corneal densitometry were measured at baseline and 1, 3, ...

Journal: :The British journal of ophthalmology 1997
D Ma J Mellon J Y Niederkorn

AIMS To determine optimal conditions for enhancing corneal allograft survival through oral administration of donor specific corneal cells. METHODS A mouse model of penetrating keratoplasty was used to evaluate the efficacy and optimal conditions for preventing immunological rejection of corneal allografts. C3H corneal grafts were transplanted orthotopically to CB6F1 recipients and represented...

Journal: :Case reports in ophthalmology 2016
Hatim Batawi Nikisha Kothari Andrew Camp Luis Bernhard Carol L Karp Anat Galor

PURPOSE We report the case of a 77-year-old man with no history of keratoconus or other ectatic disorders who presented with corneal hydrops in the setting of a corneal ulcer. The risk factors, pathogenesis and treatment options of corneal hydrops are discussed. METHOD This is an observational case report study. RESULTS A 77-year-old man presented with a 1-day history of severe pain, rednes...

2017
Alexander M. Rowe Hongmin Yun Robert L. Hendricks

Purpose Most of the inflammation in murine herpes simplex virus type 1 (HSV-1)-induced stromal keratitis (HSK) is due to exposure stress resulting from loss of corneal nerves and blink reflex. Corneal grafts often fail when placed on corneal beds with a history of HSK. We asked if corneal exposure contributes to the severe pathology of corneal grafts on HSV-1-infected corneal beds. Methods He...

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