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  • Title: [Amniotic membrane transplantation with limbal stem cell transplantation as a combined procedure for corneal surface reconstruction after severe thermal or chemical burns].
    Author: Stoiber J, Ruckhofer J, Muss W, Grabner G.
    Journal: Ophthalmologe; 2002 Nov; 99(11):839-48. PubMed ID: 12430036.
    Abstract:
    BACKGROUND: Severe thermal and chemical burns may result in limbal deficiency leading to persistent epithelial defects, complete conjunctival epithelial ingrowth and vascularisation of the cornea. If sufficiently severe, these burns may lead to very significant visual impairment. Amniotic membrane transplantation with limbal transplantation has recently been proposed as a new method for corneal surface reconstruction. PATIENTS AND METHODS: A total of 14 patients (age 18-62 years, mean age 42 years) with limbal deficiency resulting from thermal ( n=1) or chemical burns ( n=13) underwent surgery. The corneal pannus was completely removed and the amniotic membrane was grafted onto the cornea. Limbal transplantation using autografts obtained from contralateral eyes was performed simultaneously in seven cases. Allografts from a donor were transplanted in seven cases with bilateral involvement. These patients received oral cyclosporin A postoperatively. The mean follow-up time was 18 months. RESULTS: In all cases of limbal autografts the corneal surface showed a complete and stable epithelialisation within a few weeks. Out of seven patients with limbal allografts three displayed recurrent epithelial defects in the long term. The initially semitransparent amniotic membrane became more translucent and biomicroscopically invisible within several months after surgery. There was an increase in visual acuity in most cases, limited mostly by irregular astigmatism due to the initial stromal loss. CONCLUSIONS: Amniotic membrane transplantation with limbal transplantation allows reconstruction ocular surfaces severely damaged by chemical or thermal burns. In most cases, however, additional surgical procedures such as lamellar or penetrating keratoplasty are required for adequate visual rehabilitation.
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