What is a significant challenge faced by wearers of SCBA related to visibility?

Wearers of SCBA (Self-Contained Breathing Apparatus) often encounter the significant challenge of limited peripheral vision. This limitation arises due to the design of the facepiece, which is commonly fitted tightly to the user's face for a secure seal to prevent contaminants from entering. While the front of the mask provides a clear field of vision, the sides are often obstructed.

This restricted peripheral vision can be particularly problematic in emergency situations where situational awareness is critical. Firefighters need to be acutely aware of their surroundings to respond quickly and effectively to hazards or changes in the environment. The inability to see side-to-side can hinder a fire worker’s ability to detect dangers or assess the environment, increasing the risk during operations.

The other choices, such as increased light sensitivity, excessive glare, or night vision issues, do not directly pertain to the specific limitations that the SCBA facepiece imposes on visibility, making limited peripheral vision the most accurate answer to the challenge faced by SCBA wearers.