Nov 13, 2008

Surgical performance with head-mounted displays in laparoscopic surgery

Journal of Laparoendoscopic & Advanced Surgical Techniques. Part a
Christopher J PrendergastFrançois I Luks


The difficulties of laparoscopic surgery include two-dimensional image projection and loss of alignment between the surgeon's hands and visual field. Head-mounted displays (HMDs) allow freedom from gazing at a stationary overhead monitor, thus improving ergonomics. Modern HMDs offer greatly improved image quality and reduced bulk and weight. We compared two types of HMDs with conventional overhead image display. Twelve preclinical medical students (i.e., laparoscopic novices) completed the standardized bead-passing task in a Fundamentals of Laparoscopic Surgery box trainer, using a wall-mounted monitor(WALL), a solid-state high-resolution dual full-visual graphic array (VGA) HMD (HIGH-HMD), or a lightweight commercial 1/4 VGA HMD (LOW-HMD). Participants performed each task by using the three image displays. The order in which they performed each test was randomly assigned to minimize the carryover effect.Students were then asked to grade comfort and image quality on a scale from 1 (worst) to 5 (best). Statistical comparison of the time per bead was performed with the Kruskal-Wallis test, and P < 0.05 was considered significant. Average time per bead (total beads = 12/participant/test) was 14.2 seconds for WALL, 13.2 seconds for...Continue Reading

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Mentioned in this Paper

Deafness, Autosomal Dominant 1 (Disorder)
Kruskal-Wallis Test
Critical Incident Technique
Tissue Adhesions
Surgical Procedures, Laparoscopic

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