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Proceedings Paper

Measuring performance in virtual reality phacoemulsification surgery
Author(s): Per Söderberg; Carl-Gustaf Laurell; Wamidh Simawi; Eva Skarman; Leif Nordh; Per Nordqvist
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Paper Abstract

We have developed a virtual reality (VR) simulator for phacoemulsification surgery. The current work aimed at developing a relative performance index that characterizes the performance of an individual trainee. We recorded measurements of 28 response variables during three iterated surgical sessions in 9 experienced cataract surgeons, separately for the sculpting phase and the evacuation phase of phacoemulsification surgery and compared their outcome to that of a reference group of naive trainees. We defined an individual overall performance index, an individual class specific performance index and an individual variable specific performance index. We found that on an average the experienced surgeons performed at a lower level than a reference group of naive trainees but that this was particularly attributed to a few surgeons. When their overall performance index was further analyzed as class specific performance index and variable specific performance index it was found that the low level performance was attributed to a behavior that is acceptable for an experienced surgeon but not for a naive trainee. It was concluded that relative performance indices should use a reference group that corresponds to the measured individual since the definition of optimal surgery may vary among trainee groups depending on their level of experience.

Paper Details

Date Published: 25 February 2008
PDF: 9 pages
Proc. SPIE 6844, Ophthalmic Technologies XVIII, 684412 (25 February 2008); doi: 10.1117/12.779572
Show Author Affiliations
Per Söderberg, St Erik's Eye Hospital (Sweden)
Univ. of Miami (United States)
Carl-Gustaf Laurell, St Erik's Eye Hospital (Sweden)
Wamidh Simawi, St Erik's Eye Hospital (Sweden)
Uppsala Akademiska Sjukhus (Sweden)
Eva Skarman, Melerit AB (Sweden)
Leif Nordh, Melerit AB (Sweden)
Per Nordqvist, Melerit AB (Sweden)


Published in SPIE Proceedings Vol. 6844:
Ophthalmic Technologies XVIII
Bruce E. Stuck; Michael Belkin; Fabrice Manns; Per G. Söderberg; Arthur Ho, Editor(s)

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