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Optical angle and visuospatial ability affect basic laparoscopic simulator task performance.

Bas Kengen¹, Willem B Verwey², Harry van Goor¹

¹Department of Surgery, Radboud University Medical Center, Geert Grooteplein Zuid 10, 6525 GA, Nijmegen, the Netherlands.

Applied Ergonomics

|December 29, 2023

Summary

This summary is machine-generated.

Surgical training performance decreases with non-zero camera angles during laparoscopic surgery. Higher visuospatial ability improves accuracy, especially at greater optical angles, aiding surgical skill development.

Keywords:

Laparoscopy Optical angle Training Visuospatial ability

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Area of Science:

Surgical Simulation
Human Factors Engineering
Medical Education

Background:

Laparoscopic surgery performance is impaired when the camera (laparoscope) is misaligned with the surgeon's view.
Visuospatial ability is a critical factor in surgical performance, particularly in minimally invasive procedures.

Purpose of the Study:

To investigate the impact of varying optical angles on laparoscopic simulator performance in novices.
To determine the relationship between visuospatial ability and performance under non-zero optical angles in laparoscopic surgery.

Main Methods:

Novice participants underwent visuospatial ability assessment.
Participants performed a simplified laparoscopic task on a simulator at eight optical angles (0°–315°).
Task duration and accuracy were measured and analyzed across different optical angles.

Main Results:

Performance decreased significantly for task duration at all non-zero optical angles (p < .05).
Accuracy was reduced at optical angles greater than ±45° (p < .01).
High visuospatial ability correlated with significantly better accuracy under non-zero angles (p < .01), except at 180°.

Conclusions:

Non-zero optical angles negatively affect laparoscopic task performance, impacting both speed and accuracy.
Visuospatial ability is a key determinant of success in laparoscopic surgery, particularly when dealing with visual-camera misalignment.
Optimizing camera positioning and considering trainee visuospatial skills are crucial for effective laparoscopic surgical training.