Stiffness of Retinal and Choroidal Tissue: A Surface Wrinkling Analysis of Epiretinal Membranes and Choroidal Folds - 19/08/11
Inquiries to Lucian V. Del Priore, MD, PhD, Professor and Robert L. Burch III Scholar, Department of Ophthalmology, Harkness Eye Institute of Columbia University, 635 West 165th Street, New York, New YorkRésumé |
Purpose |
To measure the wrinkling periodicity (peak-to-peak or trough-to-trough distance) for epiretinal membranes and contraction-induced choroidal folds, and use this data to infer differences in the elastic properties of the retina and choroid, respectively.
Design |
Retrospective case review.
Methods |
Forty eyes were identified with epiretinal membranes (33 eyes) or contraction-induced choroidal folds (seven eyes). Digital red-free photographs were used to determine the average peak-to-peak distance between adjacent folds of retina or choroid using commercially available software.
Results |
The average peak-to-peak spacing was considerably larger for contraction-induced choroidal folds vs retinal folds caused by epiretinal membranes (278.2 ± 62.2 vs 82.2 ± 7.66 μm, respectively; P = .0001). There was no statistically significant correlation between the peak-to-peak distance and patient age for the epiretinal membrane group (P = .25) or the choroidal folds group, although the age range of patients within the later group was narrow.
Conclusions |
Epiretinal membranes and contraction-induced choroidal folds are two examples of wrinkling of biologic tissue under tangential stress. The larger peak-to-peak spacing for choroidal folds vs retinal folds demonstrates that the choroid is considerably stiffer than the retina under mechanical deformations.
Le texte complet de cet article est disponible en PDF.Plan
| Supported in part by the Eye Surgery Fund, Robert L. Burch III Fund, the Macula Foundation, the Hickey Foundation, and Research to Prevent Blindness, Inc, New York, New York. |
Vol 142 - N° 3
P. 435 - septembre 2006 Retour au numéro
Article précédent
- Intraocular Cytokine Environment in Active Behçet Uveitis
- Jae Kyoun Ahn, Hyeong Gon Yu, Hum Chung, Yeoung Geol Park
- Risk Factors for Photodynamic Therapy of Predominantly Classic Choroidal Neovascularization in Age-related Macular Degeneration
- Igor Kaiserman, Nadia Kaiserman, Asher Elhayany, Shlomo Vinker
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Déjà abonné à cette revue ?