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Proceedings Paper

Deep stroma investigation by confocal microscopy
Author(s): Francesca Rossi; Francesca Tatini; Roberto Pini; Paola Valente; Roberta Ardia; Luca Buzzonetti; Annalisa Canovetti; Alex Malandrini; Ivo Lenzetti; Luca Menabuoni
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Paper Abstract

Laser assisted keratoplasty is nowadays largely used to perform minimally invasive surgery and partial thickness keratoplasty [1-3]. The use of the femtosecond laser enables to perform a customized surgery, solving the specific problem of the single patient, designing new graft profiles and partial thickness keratoplasty (PTK). The common characteristics of the PTKs and that make them eligible respect to the standard penetrating keratoplasty, are: the preservation of eyeball integrity, a reduced risk of graft rejection, a controlled postoperative astigmatism. On the other hand, the optimal surgical results after these PTKs are related to a correct comprehension of the deep stroma layers morphology, which can help in the identification of the correct cleavage plane during surgeries. In the last years some studies were published, giving new insights about the posterior stroma morphology in adult subjects [4,5]. In this work we present a study performed on two groups of tissues: one group is from 20 adult subjects aged 59 ± 18 y.o., and the other group is from 15 young subjects, aged 12±5 y.o.. The samples were from tissues not suitable for transplant in patients. Confocal microscopy and Environmental Scanning Electron Microscopy (ESEM) were used for the analysis of the deep stroma. The preliminary results of this analysis show the main differences in between young and adult tissues, enabling to improve the knowledge of the morphology and of the biomechanical properties of human cornea, in order to improve the surgical results in partial thickness keratoplasty.

Paper Details

Date Published: 20 March 2015
PDF: 6 pages
Proc. SPIE 9307, Ophthalmic Technologies XXV, 93071H (20 March 2015); doi: 10.1117/12.2077112
Show Author Affiliations
Francesca Rossi, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
Francesca Tatini, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
Roberto Pini, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
Paola Valente, Bambino Gesù IRCCS Children's Hospital (Italy)
Roberta Ardia, Univ. degli Studi di Roma "Tor Vergata" (Italy)
Luca Buzzonetti, Bambino Gesù IRCCS Children's Hospital (Italy)
Annalisa Canovetti, Univ. degli Studi di Roma "Tor Vergata" (Italy)
Alex Malandrini, Univ. degli Studi di Roma "Tor Vergata" (Italy)
Ivo Lenzetti, Univ. degli Studi di Roma "Tor Vergata" (Italy)
Luca Menabuoni, Univ. degli Studi di Roma "Tor Vergata" (Italy)


Published in SPIE Proceedings Vol. 9307:
Ophthalmic Technologies XXV
Fabrice Manns; Per G. Söderberg; Arthur Ho, Editor(s)

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