Construct validity of a surgical simulator as a valid model for capsulorhexis training.

Area of Science:

• Ophthalmology
• Surgical Simulation
• Medical Education

Background:

• Cataract surgery requires precise execution of the capsulorhexis.
• Surgical simulators offer a safe environment for training and skill assessment.
• The EYESi simulator's capsulorhexis module is a tool for evaluating surgical proficiency.

Purpose of the Study:

• To compare the performance of novice trainees and experienced surgeons on the EYESi simulator's capsulorhexis module.
• To assess the construct validity of the simulator for cataract surgery training.

Main Methods:

• A comparative case series design was employed.
• Participants included medical students, residents, and experienced cataract surgeons with no prior simulator experience.
• Each participant completed four trials on the capsulorhexis module.

Main Results:

• Experienced surgeons achieved significantly higher overall scores than trainees on easy and medium difficulty levels (P = .004 and P = .000007).
• Experienced surgeons demonstrated superior performance in all measured parameters at the medium level, including centering, corneal injury, spikes, red reflex time, roundness, and task completion time.
• Statistical significance was observed across multiple performance metrics (P < .05).

Conclusions:

• The EYESi surgical simulator's capsulorhexis module exhibits significant construct validity.
• The simulator effectively differentiates between novice and experienced cataract surgeons.
• This validates its utility as a training and assessment tool in ophthalmology.