What is a significant drawback of NVG use during prolonged missions?

The significant drawback of using night vision goggles (NVGs) during prolonged missions is the increased risk of eye strain and fatigue. NVGs work by amplifying ambient light to create a visible image in low-light conditions. Extended use of these devices can lead to discomfort due to the bright image intensification and the need for the eyes to adjust frequently to varying light conditions. This prolonged adaptation can cause visual fatigue, headaches, and discomfort, hampering operational effectiveness.

While other factors like reduced night vision after operation, dependency on cloud cover, and higher costs of equipment maintenance can have implications, they do not specifically address the immediate physical and operational challenges that users face during extended periods of NVG activity. Therefore, the experience of eye strain and fatigue stands out as a prominent concern for personnel relying on NVGs for long durations.