December 2002
Volume 43, Issue 13
Free
ARVO Annual Meeting Abstract  |   December 2002
Human Eye Simulation: Analysis of retinal stresses during saccadic eye movement
Author Affiliations & Notes
  • RI Park
    Ophthalmic Consultants of Boston/Tufts University School of Medicine Boston MA
  • VV Chan
    Materials Science & Engineering Massachusetts Institute of Technology Boston MA
  • TM Topping
    Ophthalmic Consultants of Boston/Tufts University School of Medicine Boston MA
  • RM Rose
    Materials Science & Engineering Massachusetts Institute of Technology Boston MA
  • JS Heier
    Ophthalmic Consultants of Boston/Tufts University School of Medicine Boston MA
  • Footnotes
    Commercial Relationships   R.I. Park, None; V.V. Chan, None; T.M. Topping, None; R.M. Rose, None; J.S. Heier, None.
Investigative Ophthalmology & Visual Science December 2002, Vol.43, 2559. doi:
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      RI Park, VV Chan, TM Topping, RM Rose, JS Heier; Human Eye Simulation: Analysis of retinal stresses during saccadic eye movement . Invest. Ophthalmol. Vis. Sci. 2002;43(13):2559.

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Abstract

Abstract: : Purpose: (1) To introduce the technique of human eye simulation, a dynamic finite element model of the human eye, and (2) to determine the magnitude and distribution of retinal stresses generated during lateral saccadic eye movement. Methods: Human eye simulation was performed by creating a 3-dimensional finite element model of the human eye; structures modeled included cornea, sclera, iris, ciliary body, lens, zonules, vitreous, retina, choroid, and optic nerve. Lateral saccadic eye movement was modeled by accelerating the globe from 0-125-0 rpm over a total time of 75 msec, resulting in a 30 degree saccadic eye movement. The magnitude and duration of retinal stresses were calculated and mapped. Results: During lateral saccadic eye movement, the peak stresses were generated in the superotemporal retina and were ∼22 mPa in magnitude. There was relative sparing of the optic nerve, macula and posterior retina. Conclusion: Human eye simulation through dynamic finite element modeling provides a powerful new tool for evaluating ocular structures. The stresses generated in the retina during lateral saccadic eye movement are greatest in the supero-temporal retina with sparing of the optic nerve and posterior pole.  

Keywords: 554 retina • 460 macula/fovea • 629 vitreous 
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