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Impact of Timing During Simulated Vitreoretinal Surgery by Trainees
Ashish Markan1, Basavaraj Tigari2, Simar Rajan Singh2
1Ophthalmology, All India Institute of Medical Sciences, New Delhi, Delhi, IND.
Cureus
|August 27, 2025
Summary
Surgical timing does not impact vitreoretinal (VR) trainee performance in simulations. Objective scores and task completion times were similar, though evening sessions showed a trend toward more complications.
Area of Science:
- Ophthalmology
- Surgical Education
Background:
- Assessing surgical trainee performance is crucial for effective training.
- Understanding factors influencing performance, such as time of day, can optimize learning environments.
Purpose of the Study:
- To investigate the effect of surgical timing (morning vs. evening) on vitreoretinal (VR) trainee performance.
- To evaluate objective and subjective outcomes in a simulated surgical setting.
Main Methods:
- Prospective, cross-over observational study involving VR trainees using the Eyesi surgical simulator.
- Trainees performed standardized surgical tasks, randomly assigned to morning or evening sessions, then crossed over.
- Primary outcomes included objective scores and task completion times; secondary outcomes were subjective scores and complications.
Main Results:
- Eight VR trainees participated, with no significant differences in objective scores or time to complete tasks between morning and evening sessions.
- Complications showed a non-statistically significant trend toward being higher in the evening sessions.
- Subjective assessments by trainees indicated no perceived difference in performance based on surgical timing.
Conclusions:
- Surgical timing does not appear to affect objective performance metrics for VR trainees in a simulated environment.
- While not statistically significant, a trend of increased complications in the evening warrants further investigation.

