Restoration of the rabbit corneal surface after total epithelial debridement and complete limbal excision

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Restoration of the rabbit corneal surface after total epithelial debridement and complete limbal excision

How is the corneal epithelium restored when all of it plus the limbus have been eliminated? This investigation explored the possibility that this may be achieved through the conjunctival epithelium. The corneal epithelium of the right eye of 12 rabbits (Oryctolagus cuniculus) was totally scraped followed by surgical excision of the limbus plus 1.0-1.5 mm of the adjacent conjunctiva. Antibiotics...

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Ex vivo expansion of corneal limbal epithelial/stem cells for corneal surface reconstruction.

PURPOSE The management of severe ocular surface disease due to limbal stem cell deficiency has changed dramatically. The concept of limbal stem cells, as the source of corneal epithelium revolutionised the therapeutic approach of ocular surface reconstruction. Deficiency of limbal stem cells results in blinding ocular surface diseases. Grafting viable limbal tissue, from either fellow healthy e...

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Limbal epithelial crypt: a model for corneal epithelial maintenance and novel limbal regional variations.

OBJECTIVE To determine the distribution of cell membrane proteins and extracellular matrix proteins around the limbal epithelial crypt (LEC) compared with adjacent limbus and corneal epithelium. METHODS Serial histological sections of human corneoscleral limbus rims were stained with antibodies of interest by standard immunohistochemistry. RESULTS Superficial cells of the limbus were desmog...

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Corneal epithelial wound healing in the absence of limbal epithelium.

Corneal epithelial stem cells are thought to be at the limbus. The limbal epithelium was surgically removed in 12 New Zealand white rabbits. After 6 months, four showed mild vascularization. To challenge the remaining proliferative reserve, two consecutive 7.5-mm epithelial woundings were created 3 weeks apart in 11 limbal-deficient corneas and 11 controls. After the first wounding, five of the...

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limbal autograft after excision of primary and recurrent pterygium

purpose: to report the result of limbal autografting in primary and recurrent pterygium. methods: in this case series, all patients who were referred to our clinic at farabi hospital, isfahan, iran for treatment of pterygium were included. indications of surgery included chronic ocular irritation, impaired or threatened vision, ocular motility problem and cosmetic reasons. under subconjunctiona...

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ژورنال

عنوان ژورنال: Brazilian Journal of Medical and Biological Research

سال: 2012

ISSN: 0100-879X

DOI: 10.1590/s0100-879x2012007500023