Elastic constants of the human lens capsule
نویسندگان
چکیده
منابع مشابه
Surface ultrastructure of the human lens capsule and zonular attachments.
The ultrastructure of the human lens capsule and zonular attachments was studied using scanning electron microscopy. The capsule was found to have two components; an organized mass of undulating, roughly parallel fibrils and a granular component. The undulation of the capsular surface and filament organization was much less evident near the anterior pole. The zonules were also found to be fibri...
متن کاملMechanical properties of the human posterior lens capsule.
PURPOSE To investigate mechanical properties of the human posterior lens capsule. METHODS Twenty-five human donor eyes were obtained from an eye bank. The age of the donors ranged from 1 to 94 years. Test specimens were prepared as tissue rings from posterior lens capsules by means of excimer laser. Capsular thickness was measured microscopically as the difference in focus between microspheru...
متن کاملA structural constitutive model for the human lens capsule.
Published data on the mechanical performance of the human lens capsule when tested under uniaxial and biaxial conditions are reviewed. It is concluded that two simple phenomenological constitutive models (namely a linear elastic model and a Fung-type hyperelastic model) are unable to provide satisfactory representations of the mechanical behaviour of the capsule for both of these loading condit...
متن کاملElectron Microscopic Study of Pseudo-exfoliation of the Lens Capsule. I. Lens Capsule and Zonular Fibers.
Considerable controversy has arisen as to the nature and origin of the blue-gray flecks seen in the anterior segment of the eye in so-called pseudo-exfoliation of the lens capsule. An electron microscopic study has been carried out in an attempt to clarify this problem and Part I of this work deals with the findings in the lens and lens capsule. The filamentous nature of the deposit is confirme...
متن کاملEffect of lens extraction in pseudoexfoliation of the lens capsule.
It is a matter of considerable clinical interest whether removal of the lens causes regression of pseudoexfoliation of the lens capsule. Before the paper by Dvorak-Theobald (I954), pseudoexfoliation of the lens capsule was often confused with true exfoliation, and it was suggested that lens extraction caused the condition to disappear (Irvine, I940; Gradle and Sugar, I947). After this paper app...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1969
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1969.sp008739