FLS Camera Navigation and Optics Flashcards

The standard laparoscope used in FLS tasks has a 0° or 30° lens. What is the primary advantage of the 30° (angled) lens?

Answer: It allows the surgeon to 'look around corners' by rotating the scope

Rotating a 30° angled scope redirects the viewing angle, allowing visualization behind structures and in areas not accessible with a straight 0° lens.

In FLS box trainer tasks, the camera is typically placed through which port?

Answer: The umbilical 10–12 mm central port

The FLS box trainer camera port is in the central umbilical position, mirroring the standard laparoscopic camera placement in most abdominal procedures.

When the camera is positioned too close to the target tissue in the FLS box trainer, the result is:

Answer: Loss of spatial orientation and inability to see instrument tips

Placing the camera too close eliminates the surrounding context needed for spatial orientation, making it difficult to coordinate instrument movements.

White balancing the laparoscope before insertion is important because it:

Answer: Calibrates the camera to display accurate colors under the operative light

White balance calibrates the camera chip to the specific light source so that tissue colors (especially the hues of bleeding or ischemia) appear accurately on the monitor.

The phenomenon of 'fulcrum effect' in laparoscopy means that when the surgeon moves the instrument handle to the right, the instrument tip moves:

Answer: To the left (in the opposite direction)

Because the trocar acts as a fixed pivot point (fulcrum), handle and tip move in opposite directions — a key psychomotor adaptation required for laparoscopic skill.

Fogging of the laparoscope lens occurs when the scope enters a colder peritoneal cavity from a warm room. The most practical intraoperative remedy is:

Answer: Warm the scope tip in warm saline or use anti-fog solution before insertion

Warming the laparoscope tip to body temperature before insertion or applying anti-fog solution prevents condensation from forming on the cold lens surface.