A comparative study on the viscoelastic properties of human and animal lenses
| Autor: | Prashant K. Sharma, T. G. van Kooten, Steven A. Koopmans, H.J. Busscher, T. Terwee |
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| Přispěvatelé: | Man, Biomaterials and Microbes (MBM), Personalized Healthcare Technology (PHT), Restoring Organ Function by Means of Regenerative Medicine (REGENERATE) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Aging
Compressive Strength Sus scrofa law.invention PRESBYOPIA law Composite material Child Time constant Stiffness CAPSULE STIFFNESS MECHANICAL-PROPERTIES Middle Aged STRETCHER Sensory Systems ACCOMMODATION Lens (optics) Compressive load Rabbits medicine.symptom monkey BIOMECHANICAL MEASUREMENTS Adult Materials science Adolescent lens Lens Capsule Crystalline Astrophysics::Cosmology and Extragalactic Astrophysics Viscoelasticity Young Adult Cellular and Molecular Neuroscience Optics AGE Lens Crystalline medicine Animals Humans leporine Elasticity (economics) ELASTIC CONSTANTS Pliability Aged business.industry Generalized Maxwell model Presbyopia Elastic Tissue medicine.disease porcine Macaca mulatta eye diseases Ophthalmology HUMAN CRYSTALLINE LENS elasticity sense organs business |
| Zdroj: | Experimental eye research, 93(5), 681-688. ACADEMIC PRESS LTD-ELSEVIER SCIENCE LTD |
| ISSN: | 0014-4835 |
| Popis: | A new method of compression between two parallel plates is used to measure the viscoelastic properties of whole and decapsulated human lenses and compare them with other animal species. Compressive load relaxation was performed by deforming the lens by 10% and measuring the force relaxation response for 100s to obtain thickness, stiffness and relaxation of the induced loading force and Maxwell parameters for human, monkey, porcine and leporine whole and decapsulated lenses. Thickness and percentage loading force relaxation increased linearly with lens age, whereas stiffness and induced loading force increased exponentially. Human and monkey lenses aged at different rates. Loading force relaxation in a generalized Maxwell model was described by three time constants ranging from 1 to 1000 s. Compressive load relaxation is a very versatile method to study the viscoelastic properties of whole and decapsulated lenses and potentially also artificial accommodating lenses. The data presented in the study will help researchers choose the most suitable animal lenses based on the desired properties and age to be mimicked from the human lenses. (C) 2011 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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