Research Papers

Effect of material properties of the eyeball coat on optical image stability

[+] Author Affiliations
Wiesław Śródka

Wroclaw University of Technology, Faculty of Deformable Body Mechanics, Wroclaw, Poland

Barbara K. Pierscionek

University of Ulster, School of Biomedical Sciences, Cromore Road, Coleraine, BT52 1SA, United Kingdom

J. Biomed. Opt. 13(5), 054013 (September 10, 2008). doi:10.1117/1.2975844
History: Received March 05, 2008; Revised April 15, 2008; Accepted April 22, 2008; Published September 10, 2008
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The dynamics of the eyeball, most notably the changes in intraocular pressure, need to be stabilized optically to prevent noticeable changes in image quality. This control depends on the rheological properties of the eyeball coats and how the elasticity of the cornea, sclera, and limbus vary relative to one another. Nonlinear finite element modeling shows that image quality can be preserved over a range of elastic moduli. For intraocular pressure variations from 8to40mm Hg, optical image stability is best for an elastic secant modulus of the cornea of 0.267MPa. Optimal quality is achieved when the elastic moduli of the limbus and sclera are, respectively, 3.6 and 4 times that of the corneal modulus.

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© 2008 Society of Photo-Optical Instrumentation Engineers

Citation

Wiesław Śródka and Barbara K. Pierscionek
"Effect of material properties of the eyeball coat on optical image stability", J. Biomed. Opt. 13(5), 054013 (September 10, 2008). ; http://dx.doi.org/10.1117/1.2975844


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