نتایج جستجو برای: limbal allograft

تعداد نتایج: 17320  

Journal: :The British journal of ophthalmology 2000
H S Dua A Azuara-Blanco

AIM To describe a surgical technique for autologous limbal stem cell transplantation and the outcome of a series of patients with unilateral stem cell deficiency. METHODS A report of six consecutive patients who underwent autologous limbal stem cell transplantation is presented. The primary diagnosis included alkali burn (n=3), conjunctival intraepithelial neoplasia (CIN) (n=1), recurrent pte...

Journal: :The British journal of ophthalmology 2001
D F Anderson P Ellies R T Pires S C Tseng

AIM To examine the efficacy, safety, and long term outcomes of amniotic membrane transplantation for corneal surface reconstruction in cases of partial limbal stem cell deficiency. METHODS 17 eyes of 15 patients with partial limbal stem cell deficiency underwent superficial keratectomy of the conjunctivalised corneal surface followed by amniotic membrane transplantation. Cases were followed u...

Journal: :Arquivos brasileiros de oftalmologia 2010
José Reinaldo da Silva Ricardo José Alvaro Pereira Gomes

Lesions on the ocular surface can destroy the stem cells from the limbus and cause limbal stem cell deficiency. The limbal stem cell deficiency is marked by conjunctivalization, which can be defined as the invasion of conjunctival epithelium over the cornea. This process is accompanied by varying degrees of corneal changes such as neovascularization, inflammation, recurrent erosions, persistent...

Journal: :Survey of ophthalmology 1997
M D Wagoner

Chemical injuries of the eye may produce extensive damage to the ocular surface epithelium, cornea, and anterior segment, resulting in permanent unilateral or bilateral visual impairment. Pathophysiological events which may influence the final visual prognosis and which are amenable to therapeutic modulation include 1) ocular surface injury, repair, and differentiation, 2) corneal stromal matri...

Journal: :Ophthalmic research 2007
Martin Grueterich Kenneth R Kenyon Siegfried Priglinger Ulrich Welge-Luessen Carlo Lackerbauer A Kampik

BACKGROUND To perform lamellar keratolimbal allograft transplantation in a one-step procedure with a single graft, we investigated the feasibility of harvesting eccentric lamellar keratolimbal grafts from conventionally processed corneoscleral buttons using a manually guided microkeratome in conjunction with an artificial anterior chamber system. METHODS We used the Moria LSK-One microkeratom...

ژورنال: Anatomical Sciences Journal 2006
Bahar Vand, Hosein, Ebrahimi, Marziyeh, Masoomi, Mohammad, Piriaei, Abbas,

Purpose: The present study intends to show the characteristics of cultured limbal stem cell (CLSCs) and to compare them with normal Conjunctival (C), Limbal (L) and Cornea (K) tissues. Materials and Methods: The expressions of a set of genes potentially involved in differentiation and stemness function of limbal stem cells were assessed in freshly prepared limbal, corneal, and conjunctival tis...

2016
Gheorghe Alina Pop Monica Mrini Fildis Barac Ramona Vargau Iulia

The purpose of our review was to familiarize the readers with the new concepts in ocular surface diseases and reconstruction. Limbal stem cell deficiency is characterized by the progressive invasion of conjunctival epithelial cells onto the cornea, superficial vascularisation, destruction of the corneal basement membrane, and chronic inflammatory cell infiltration. Depending on the severity of ...

Journal: :The Indian journal of medical research 2008
Sudha Balasubramanian Srilatha Jasty Guruswamy Sitalakshmi H N Madhavan Subramanian Krishnakumar

BACKGROUND & OBJECTIVE The limbus is enriched with the stem cells of corneal epithelium. Auto- and allograft limbal transplantations are effective in restoring the corneal epithelium and inhibiting inflammation and neovascularization. Preserved human amniotic membrane (AM) is now widely used as a substrate for ocular surface reconstruction. The combination of limbal and AM transplantation has b...

Juan A. Ramirez-Miranda Siamak Zarei-Ghanavati Sophie X. Deng

Background  To report normal variations of the limbal structures using in vivo laser scanning confocal microscopy. Methods: This was a retrospective study of fourteen eyes from 11 healthy individuals. Confocal imaging of cornea and limbus was performed using Heidelberg Retina Tomograph III Rostock Corneal Module. Results: The typical structure of the palisades of Vogt (POV) was detected ...

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