What is the best unaided vision for NVG?

The best unaided vision for night vision goggles (NVGs) is typically around 20/200. This level of eyesight is generally recognized as the minimum acceptable standard for effective usage of NVGs, as the devices significantly enhance vision in low-light conditions.

At this acuity, a person can detect and identify objects that are much less discernible to those with poorer vision. NVGs are designed to amplify available light, allowing users with 20/200 vision to see clearly in darkness, which is crucial for operations that require situational awareness in low-light environments.

Higher degrees of visual acuity, such as 20/100 or better, are advantageous and may enhance overall performance when using NVGs, but 20/200 represents a critical baseline requirement for effective operation. Thus, this standard serves as a guideline to ensure that users can adequately perceive their surroundings while relying on NVG technology.