English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/65616
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Dynamic OCT measurement of corneal deformation by an air puff in normal and cross-linked corneas

AuthorsDorronsoro, Carlos ; Pascual, Daniel ; Pérez Merino, Pablo ; Klinge, S.; Marcos, Susana
Issue Date2012
PublisherOptical Society of America
CitationBiomedical Optics Express 3: 473-487 (2012)
AbstractA new technique is presented for the non-invasive imaging of the dynamic response of the cornea to an air puff inducing a deformation. A spectral OCT instrument combined with an air tonometer in a non-collinear configuration was used to image the corneal deformation over full corneal cross-sections, as well as to obtain high speed measurements of the temporal evolution of the corneal apex. The entire deformation process can be dynamically visualized. A quantitative analysis allows direct extraction of several deformation parameters, such as amplitude, diameter and volume of the maximum deformation, as well as duration and speed of the increasing deformation period and the recovery period. The potential of the technique is demonstrated on porcine corneas in vitro under constant IOP for several conditions (untreated, after riboflavin instillation and under cross-linking with ultraviolet light), as well as on human corneas in vivo. The new technique has proved very sensitive to detect differences in the deformation parameters across conditions. We have confirmed non-invasively that Riboflavin and UV-cross-linking induce changes in the corneal biomechanical properties. Those differences appear to be the result of changes in constituent properties of the cornea, and not a consequence of changes in corneal thickness, geometry or IOP. These measurements are a first step for the estimation of the biomechanical properties of corneal tissue, at an individual level and in vivo, to improve diagnosis and prognosis of diseases and treatments involving changes in the biomechanical properties of the cornea. © 2012 Optical Society of America.
Identifiersdoi: 10.1364/BOE.3.000473
issn: 2156-7085
Appears in Collections:(CFMAC-IO) Artículos
Files in This Item:
File Description SizeFormat 
Dorronsoro.pdf1,75 MBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.