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Mattes, D; Reich, EM; Muellner, K; Langmann, G.
Evaluation of a KTP (potassium-titanyl-phosphate) 532 nm laser for endovaporization of choroidal melanomas.
LASER SURG MED 2005 36: 57-64.
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Autor/innen der Med Uni Graz:
Langmann Gerald
Mattes Dietmar
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Abstract:
BACKGROUND AND OBJECTIVES: The purpose of this in vitro study is to evaluate the use of the KTP (potassium-titanyl-phosphate) 532 nm laser for future use in endovaporization of large choroidal melanomas. STUDY DESIGN/MATERIALS AND METHODS: A KTP 532 nm green laser coupled to a 0.3 mm fiberoptic probe was used to perform in vitro studies on human cadaver eyes and on one enucleated melanoma eye. The specimens were examined by histological staining (Masson-Trichrome) and scanning electron microscopy (SEM). RESULTS: Histological analysis of sclera, choroid, retina, and melanoma revealed different zones of collateral thermal tissue damage. These zones were analyzed quantitatively. We determined the best suitable laser parameters and the time for sclera penetration. CONCLUSIONS: The KTP-laser showed good potential in intraocular vaporization of choroidal melanomas. However, great differences in laser absorption between sclera and melanoma can cause significant complications such as perforation.
Find related publications in this database (using NLM MeSH Indexing)
Aged -
Choroid Neoplasms - pathology
Female - pathology
Humans - pathology
Laser Surgery - instrumentation
Male - instrumentation
Melanoma - pathology
Microscopy, Electron, Scanning - pathology
Middle Aged - pathology
Phosphates - pathology
Retina - pathology
Sclera - pathology
Titanium - pathology

Find related publications in this database (Keywords)
choroids
eye
histopathology
laser parameters
melanoma
selera
sclera infiltration
thermal damage
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