Modification of Kong's Lateral Canthotomy Simulation Trainer for Added Realism and Tonometry Practice.

Area of Science:

• Medical Simulation
• Ophthalmology
• Emergency Medicine

Background:

• Lateral canthotomy with cantholysis is a critical emergency procedure for elevated intraocular pressure.
• Opportunities for hands-on practice are limited due to the procedure's rarity.
• Existing simulation models offer basic training but can be enhanced for greater realism.

Purpose of the Study:

• To modify an existing low-cost simulation model for lateral canthotomy with cantholysis.
• To incorporate realistic tactile feedback and allow for practicing intraocular pressure measurement.
• To evaluate the effectiveness of the modified trainer in improving trainee comfort and skill.

Main Methods:

• Modified a table tennis ball-based simulation model by replacing the ball with an endotracheal tube cuff.
• Utilized the modified trainer for practicing both handheld applanation tonometry and the lateral canthotomy procedure.
• Conducted a teaching session with 53 participants, assessing comfort levels via pre- and post- Likert scale surveys.

Main Results:

• The modified trainer provided realistic tactile feedback and allowed for practicing tonometry as part of the canthotomy procedure.
• Participants reported a significant increase in comfort levels for both tonometry (median 4/5 to 4.5/5) and lateral canthotomy (median 2/5 to 4/5).
• The cost of the simulation model increased slightly from $5 to $15 USD.

Conclusions:

• The modified endotracheal tube cuff simulation model is an effective and affordable teaching tool for the rare lateral canthotomy with cantholysis procedure.
• This enhanced trainer improves trainee confidence and practical skills in managing elevated intraocular pressure emergencies.
• Emergency medicine and ophthalmology educators can utilize this model to bridge the gap in practical training for this vital procedure.