Abstract
PURPOSE: To evaluate the variability of performance among novice ophthalmic trainees in a range of repeated tasks using the Eyesi virtual reality (VR) simulator.
METHODS: Eighteen subjects undertook three attempts of five cataract specific and generic three-dimensional tasks: continuous curvilinear capsulorhexis, cracking and chopping, cataract navigation, bimanual cataract training, anti-tremor. Scores for each attempt were out of a maximum of 100 points. A non-parametric test was used to analyse the data, where a P-value of <0.05 was considered statistically significant.
RESULTS: Highly significant differences were found between the scores achieved in the first attempt and that during the second (P<0.0001) and third (P<0.0001) but not between the second and third attempt (P=0.65). There was no significant variability in the overall score between the users (P=0.1104) or in the difference between their highest and lowest score (P=0.3878). Highly significant differences between tasks were shown both in the overall score (P=0.0001) and in the difference between highest and lowest score (P=0.003).
CONCLUSION: This study, which is the first to quantify reproducibility of performance in entry level trainees using a VR tool, demonstrated significant intra-novice variability. The cohort of subjects performed equally overall in the range of tasks (no inter-novice variability) but each showed that performance varies significantly with the complexity of the task when using this high-fidelity instrument.
Original language | English |
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Pages (from-to) | 1269-74 |
Number of pages | 6 |
Journal | Eye (London, England) |
Volume | 27 |
Issue number | 11 |
DOIs | |
Publication status | Published - Nov 2013 |
Keywords
- Capsulorhexis
- Cataract Extraction
- Computer Simulation
- Computer-Assisted Instruction
- Education, Medical, Graduate
- Educational Measurement
- Humans
- Ophthalmology
- Prospective Studies
- Reproducibility of Results
- Statistics, Nonparametric