Sensitivity study of human crystalline lens accommodation

  • Authors:
  • A. Abolmaali;R. A. Schachar;T. Le

  • Affiliations:
  • Department of Civil and Environmental Engineering, University of Texas at Arlington, TX 76019, USA;Physics Department, University of Texas at Arlington, PO Box 601149, Dallas, TX 75360, USA;Department of Civil and Environmental Engineering, University of Texas at Arlington, TX 76019, USA

  • Venue:
  • Computer Methods and Programs in Biomedicine
  • Year:
  • 2007

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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.