Simulating the continuous curvilinear capsulorhexis procedure during cataract surgery on the EYESI™ system

Roger Webster, Joseph Sassani, Rod Shenk, Matt Harris, Jesse Gerber, Aaron Benson, John Blumenstock, Chad Billman, Randy Haluck

Research output: Chapter in Book/Report/Conference proceedingConference contribution

39 Scopus citations

Abstract

This paper describes a technique for simulating the capsulorhexis procedure during cataract surgery on the EYESI™ system. The continuous curvilinear capsulorhexis technique can be a difficult procedure for beginning ophthalmology surgeons. In the initial phase of tearing the tissue, the tear vector is tangential to the circumference of the tear circle. However, without the proper re-grasping of the flap of torn tissue close to the tear point, the tear vector angle quickly runs downhill possibly causing severe damage to the tissue. Novice surgeons tend to try to complete the capsulorhexis without the time consuming re-grasping of the tissue flap. Other factors such as anterior bowing of the lens diaphragm, patient age, and shallow anterior chambers add to the problematic nature of the procedure. The tissue area is modeled as a curvilinear mesh of nodes and springs. Deformation is accomplished via a physically based particle model utilizing a heuristic algorithm to constrain the deformation calculations to the locality of the tear area to speed up computations. The training software alerts the user of any potential tear problems before they occur thus instructing the novice surgeon. The EYESI™ hardware system (from VRMagic GmbH) provides the user with stereoscopic images thus providing 3D viewing. Our capsulorhexis simulator software models a number of tear problems and anomalies to provide a useful training environment without the dangers of using live patients.

Original languageEnglish (US)
Title of host publicationMedicine Meets Virtual Reality 13
Subtitle of host publicationThe Magical Next Becomes the Medical Now, MMVR 2005
PublisherIOS Press
Pages592-595
Number of pages4
ISBN (Print)1586034987, 9781586034986
StatePublished - Jan 1 2005
Event13th Annual Conference on Medicine Meets Virtual Reality: The Magical Next Becomes the Medical Now, MMVR 2005 - Long Beach, CA, United States
Duration: Jan 26 2005Jan 29 2005

Publication series

NameStudies in Health Technology and Informatics
Volume111
ISSN (Print)0926-9630
ISSN (Electronic)1879-8365

Other

Other13th Annual Conference on Medicine Meets Virtual Reality: The Magical Next Becomes the Medical Now, MMVR 2005
CountryUnited States
CityLong Beach, CA
Period1/26/051/29/05

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management

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