FLS FLS Camera Navigation and Optics 2

Question 1

Depth perception in laparoscopic surgery is primarily achieved through:

Accepted Answer

Monocular cues such as shadows, relative size, and instrument feedback

Answer

Standard 2D laparoscopy relies on monocular depth cues — shadows, overlap, relative motion, and tactile feedback — because a single camera cannot provide true stereoscopic vision.

Question 2

In the FLS peg transfer task, which camera orientation is most critical for accurate performance?

Accepted Answer

Camera aimed downward at 45° toward the pegs

Answer

A downward angled view provides the spatial perspective needed to see the peg tops, judge ring placement, and coordinate bimanual transfer in the FLS trainer.

Question 3

The standard monitor height for a laparoscopic surgeon during FLS training should be:

Accepted Answer

At or slightly below eye level, aligned with the surgical field

Answer

Monitor placement at or slightly below eye level allows the surgeon to maintain a neutral neck position and align visual gaze with the operative field on screen.

Question 4

When the laparoscope is rotated during a procedure, the horizon on the monitor tilts. To maintain proper orientation, the surgeon should:

Accepted Answer

Counter-rotate the scope to restore the horizon or use camera rotation correction software

Answer

Counter-rotating the scope back to horizon or using the camera head's rotation correction restores proper anatomical orientation on the monitor.

Question 5

What effect does increasing the distance between the laparoscope and the target tissue have on the image?

Accepted Answer

Decreases magnification, increases field of view, and decreases brightness

Answer

Moving the scope farther from the target reduces image magnification and brightness (light follows inverse square law) while expanding the field of view.

FLS - Fundamentals of Laparoscopic Surgery Practice Test

FLS - Fundamentals of Laparoscopic Surgery Practice Test

FLS FLS Camera Navigation and Optics 2