| Study of photoablation of rabbit corneas by Er:YAG laser. | |
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MedLine Citation:
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PMID: 8836994 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND AND OBJECTIVE: This work studied the ablation mechanisms of rabbit corneas by the Erbium:YAG laser. The occurrence of thermal and mechanical damages in the tissue as a function of the laser fluence was also investigated. STUDY DESIGN/MATERIALS AND METHODS: The experiments were performed both on enucleated eyes and in vivo. An ultrafast imaging technique was used to investigate the dynamic evolution of the ablation. The treated samples underwent histological and ultrastructural study. RESULTS: A single high fluence laser shot led to the complete removal of the epithelium by a photomechanical effect. In eyes whose epithelium was manually removed, high fluence pulses resulted in evident tears in the stroma, whereas low fluence pulses led to few microns deep incisions, characterized by limited mechanical and thermal damages. CONCLUSION: The photomechanical action plays a significant role in the ablation of the cornea by Erbium laser. Precise control of the fluence is required to avoid cracking phenomena in the stroma. |
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Authors:
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R Cubeddu; R Brancato; C Sozzi; P Taroni; G Trabucchi; G Valentini; M Verdi |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Lasers in surgery and medicine Volume: 19 ISSN: 0196-8092 ISO Abbreviation: Lasers Surg Med Publication Date: 1996 |
Date Detail:
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Created Date: 1996-12-17 Completed Date: 1996-12-17 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 8007168 Medline TA: Lasers Surg Med Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 32-9 Citation Subset: IM |
Affiliation:
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C.E.Q.S.E.-C.N.R., Politecnico di Milano, Italy. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aluminum Silicates Animals Cornea / anatomy & histology, cytology, surgery*, ultrastructure Corneal Stroma / injuries, surgery Cytoplasm / ultrastructure Epithelial Cells Epithelium / surgery, ultrastructure Erbium Hot Temperature Image Processing, Computer-Assisted / instrumentation Laser Therapy* / instrumentation, methods Lasers* Rabbits Vacuoles / ultrastructure Video Recording / instrumentation Yttrium |
| Chemical | |
Reg. No./Substance:
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0/Aluminum Silicates; 7440-52-0/Erbium; 7440-65-5/Yttrium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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