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Effect of distraction on simulated anterior segment surgical performance.
Journal of Cataract and Refractive Surgery 2011 August
PURPOSE: To determine the effect of distraction on anterior segment surgical performance using a virtual reality simulator in expert and novice surgeons.
SETTING: Horizon Suite Simulation Centre, South Devon Foundation NHS Trust, Devon, England.
DESIGN: Cohort study.
METHODS: Expert and novice ophthalmic surgeons completed a standardized and validated surgical task 10 times on a virtual reality simulator (EyeSi). They then completed a cognitive task (arithmetic questions), after which they completed 10 attempts on the simulator module while also completing the cognitive task.
RESULTS: For experts (n = 7), the distracting cognitive task had no statistically significant effect on operating scores. The rate of correctly answered questions decreased from 12.3 per minute ± 2.1 (SD) while single tasking to 8.6 ± 3.1 per minute while dual tasking (P=.018). For novices (n = 14), the distracting cognitive task had no effect on any operating score except a small reduction in the penalty odometer score. The rate of correctly answered questions decreased from 11.5 ± 4.1 per minute while single tasking to 7.0 ± 3.2 per minute while dual tasking (P=.001).
CONCLUSION: A distractive cognitive task reduced the ability of novice surgeons and expert surgeons to deal with that cognitive task, although their simulated surgical performance was not overtly compromised.
FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.
SETTING: Horizon Suite Simulation Centre, South Devon Foundation NHS Trust, Devon, England.
DESIGN: Cohort study.
METHODS: Expert and novice ophthalmic surgeons completed a standardized and validated surgical task 10 times on a virtual reality simulator (EyeSi). They then completed a cognitive task (arithmetic questions), after which they completed 10 attempts on the simulator module while also completing the cognitive task.
RESULTS: For experts (n = 7), the distracting cognitive task had no statistically significant effect on operating scores. The rate of correctly answered questions decreased from 12.3 per minute ± 2.1 (SD) while single tasking to 8.6 ± 3.1 per minute while dual tasking (P=.018). For novices (n = 14), the distracting cognitive task had no effect on any operating score except a small reduction in the penalty odometer score. The rate of correctly answered questions decreased from 11.5 ± 4.1 per minute while single tasking to 7.0 ± 3.2 per minute while dual tasking (P=.001).
CONCLUSION: A distractive cognitive task reduced the ability of novice surgeons and expert surgeons to deal with that cognitive task, although their simulated surgical performance was not overtly compromised.
FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.
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