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Vitreous liquefaction and induced traction on the retina
Research group |
Elisa Colangeli a, Rodolfo Repetto b, Amabile Tatone a, Alessandro Testa a
a Università degli Studi dell'Aquila, L'Aquila, Italy
b Università degli Studi di Genova, Genova, Italy
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Project outline |
Vitreous humor, which fills most part of the eye's interior, is a gel-like substance in the young healthy man. With aging, it undergoes a liquefaction process that usually leads to vitreous separation from the retina, which is called Posterior Vitreous Detachment (PVD). Sites of strong adherence between the vitreous and the retina may prevent a complete detachment. In such circumstances the adherent vitreous collagen fibers may pull so hard as to produce a retinal break, triggering a retinal detachment. This rupture mechanism may possibly be induced, or amplified, by eye natural rotations. According to (Sebag, 1989):
How to best evaluate the presence or absence of vitreous traction and how to quantitate the degree of vitreous traction is presently not known.
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Proceedings |
A. Tatone, A. Testa, Vitreous shinkage and posterior vitreous detachment, XX Congresso AIMETA, September 12--15, Bologna, 2011.
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E. Colangeli, R. Repetto, A. Tatone, A. Testa, Traction on the retina induced by saccadic eye movements in the presence of posterior vitreous detachment, European COMSOL Conference, October 24, Grenoble, 2007.
[slides]
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Presentations |
A. Tatone, R. Repetto, A Model of Posterior Vitreous Detachment and Generation of Tractions on the Retina, 8th European Solid Mechanics Conference, Graz, Austria, July 9-13, 2012. [slides]
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A. Tatone, Il distacco ed il rimodellamento del vitreo, 91^ Congresso Nazionale SOI, Simposio: Bio-ingegneria applicata all'oftalmologia, Milano, 25 Novembre 2011. [slides]
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A. Tatone, R. Repetto, A mechanical model for dynamical tractions on the retina in the presence of posterior vitreous detachment, Euromech Colloquium 518: Biomechanics of the Eye Imperial College London, 26-28 July 2010 , [slides] |
A. Tatone, How the vitreous motion can generate severe tractions on the retina, Genova, 2009. [slides]
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Creation date: March 22, 2008. Last updated: December 15, 2013
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