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Proceedings Paper

Laser welding in penetrating keratoplasty and cataract surgery of pediatric patients: early results
Author(s): Francesca Rossi; Roberto Pini; Luca Menabuoni; Alex Malandrini; Annalisa Canovetti; Ivo Lenzetti; Paolo Capozzi; Paola Valente; Luca Buzzonetti
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Paper Abstract

Diode laser welding of ocular tissues is a procedure that enables minimally invasive closure of a corneal wound. This procedure is based on a photothermal effect: a water solution of Indocyanine Green (ICG) is inserted in the surgical wound, in order to stain the corneal tissue walls. The stained tissue is then irradiated with a low power infrared diode laser, delivering laser light through a 300-μm core diameter optical fiber. This procedure enables an immediate closure of the wounds: it is thus possible to reduce or to substitute the use of surgical threads. This is of particular interest in children, because the immediate closure improves refractive outcome and anti-amblyopic effect; moreover this procedure avoids several general anaesthesia for suture management. In this work, we present the first use of diode laser welding procedure in paediatric patients. 5 selected patients underwent cataract surgery (Group 1), while 4 underwent fs-laserassisted penetrating keratoplasty (Group 2). In Group 1 the conventional surgery procedure was performed, while no stitches were used for the closure of the surgical wounds: these were laser welded and immediately closed. In Group 2 the donor button was sutured upon the recipient by 8 single stitches, instead of 16 single stitches or a running suture. The laser welding procedure was performed in order to join the donor tissue to the recipient bed. Objective observations in the follow up study evidenced a perfect adhesion of the laser welded tissues, no collateral effects and an optimal restoration of the treated tissues.

Paper Details

Date Published: 26 March 2013
PDF: 6 pages
Proc. SPIE 8567, Ophthalmic Technologies XXIII, 85671R (26 March 2013); doi: 10.1117/12.2003553
Show Author Affiliations
Francesca Rossi, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
Roberto Pini, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
Luca Menabuoni, Ospedale Misericordia e Dolce (Italy)
Alex Malandrini, Ospedale Misericordia e Dolce (Italy)
Annalisa Canovetti, Ospedale Misericordia e Dolce (Italy)
Ivo Lenzetti, Ospedale Misericordia e Dolce (Italy)
Paolo Capozzi, Bambino Gesù IRCCS Children's Hospital (Italy)
Paola Valente, Bambino Gesù IRCCS Children's Hospital (Italy)
Luca Buzzonetti, Bambino Gesù IRCCS Children's Hospital (Italy)

Published in SPIE Proceedings Vol. 8567:
Ophthalmic Technologies XXIII
Fabrice Manns; Per G. Söderberg; Arthur Ho, Editor(s)

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