The Elasticity of Sclera and Choroid of the Human Eye, and Its Implications on Scleral Rigidity and Accommodation

[+] Author and Article Information
W. P. Graebel

Department of Applied Mechanics and Engineering Science, The University of Michigan, Ann Arbor, Mich.

G. W. H. M. van Alphen

Department of Ophthalmology, The University of Michigan, Ann Arbor, Mich.; The Netherlands Ophthalmic Research Institute, Amsterdam, Holland

J Biomech Eng 99(4), 203-208 (Nov 01, 1977) (6 pages) doi:10.1115/1.3426291 History: Received July 05, 1977; Online October 21, 2010


Uniaxial measurement of stress as a function of strain were performed on strips of sclera and choroid from human eyes. The scleral strips indicated an exponential stress-strain behavior, while the choroidal strips exhibited a power law behavior. Linear elastic models are used to deduce the physiologic range of interest and the relation of the stress-strain behavior to scleral rigidity. Stress changes in the choroid during accommodation are discussed.

Copyright © 1977 by ASME
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