1. Date of download: 10/20/2017
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From: Regional Multiaxial Mechanical Properties of the Porcine Anterior Lens Capsule
J Biomech Eng. 2006;129(1): doi: /
Figure Legend:
Arrangement of seven overlapping sets of five 40μm diameter microspheres on the anterior lens capsule for use as video tracking markers. The center marker of set D is placed at the pole (Y-suture). Sets A to D lie along the minor equatorial axis and sets D to G lie along the major equatorial axis, with the anterior lens capsule imagined as a hemi-ellipsoid. Note that each set of five markers defines a four-element “subdomain” (see exploded view for set A) for inverse finite element estimation of regional properties, independent of the overall geometry of the lens capsule and boundary conditions at the equator. Each inverse finite element estimation is performed by specifying the four outer nodes as displacement boundary conditions and using the (x,y,z) coordinates of the center node to minimize the difference between predicted and experimentally measured positions.