What is the primary risk of using NVGs excessively without breaks?

Using night vision goggles (NVGs) excessively without taking regular breaks can lead to eye strain and fatigue, which is the primary risk associated with prolonged use. NVGs amplify low levels of light, making it easier to see in the dark. However, this constant stimulation and the conditions under which NVGs operate can put significant strain on the eyes. Users may find that their vision becomes less clear or more uncomfortable the longer they wear these devices without rest.

Taking breaks allows the eyes to relax and recover from the fatigue caused by the bright displays and the adjustment to various lighting conditions. Without these breaks, users may experience discomfort, reduced visual performance, and increased sensitivity to light, ultimately hindering their ability to see effectively in low-light situations. It's crucial for users to adhere to recommended usage guidelines to maintain optimal visual health and ensure safety during nighttime operations.