Abolmaali A, Schachar RA, Le T. Sensitivity study of human crystalline lens accommodation.
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2007;
85:77-90. [PMID:
17005291 DOI:
10.1016/j.cmpb.2006.08.005]
[Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2006] [Revised: 08/22/2006] [Accepted: 08/24/2006] [Indexed: 05/12/2023]
Abstract
A nonlinear axisymmetric finite element method (FEM) analysis was employed to determine the critical geometric and material properties that affect human accommodation. In this model, commencing at zero, zonular traction on all lens profiles resulted in central lenticular surface steepening and peripheral surface flattening, with a simultaneous increase in central lens thickness and central optical power. An age-related decline in maximum zonular tension appears to be the most likely etiology for the decrease in accommodative amplitude with age.
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