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| Research article summary (published 30 Dec 2002): |
Virtual reality simulator for vitreoretinal surgery.
Full Abstract
AIM:
To develop computer simulation of steps in vitreoretinal surgery using virtual reality technology.
MATERIAL AND METHODS:
A workstation with three-dimensional position tracking stylus was attached to a Pentium II desktop PC with a graphic accelerator. Computer algorithms were developed using Open GL and Microsoft Visual C++ languages to control the interaction and update the visual feedback tracking the instruments. Soft tissue computer modelling was carried out to mimic the removal of a vitreous opacity. Lens touch with the instruments was also detected. Mathematical modelling to allow for lens distortion was taken into account.
RESULTS:
A virtual reality computer model has been developed that can simulate initial steps of vitreoretinal surgery. Soft tissue modelling of the vitreous opacity and its removal by the vitrector was successfully simulated. The movements of the active and passive instruments in the dummy eye corresponded to the movements on the computer screen. On evaluation of the system, there was a minimal but discernable time lag between the stylus movement and the visual feedback. There was no tactile feedback when the lens touch was simulated. No further complex vitreoretinal surgery simulation was possible at this stage.
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Author information
Author/s: Verma, D (D); Wills, D (D); Verma, M (M);
Affiliation: Department of Ophthamology, Hull Royal Infirmary, UK. dverma(-atsign-)dei.hsc.usc.edu
Journal and publication information
Publication Type: Evaluation Studies; Journal Article
Journal: Eye (London, England) (Eye), published in England. (Language: eng)
Reference: 2003-Jan; vol 17 (issue 1) : pp 71-3
Dates: Created 2003/02/11; Completed 2003/03/05; Revised 2004/11/17;
PMID: 12579173, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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