noun
peripheral vision
Technical term used in vision science, psychology, and everyday contexts to refer to the ability to see objects outside the direct line of sight.
周辺視覚は、動くものに敏感だと言われている。
Peripheral vision is said to be sensitive to moving objects.
運転中は周辺視覚を使って歩行者に注意する必要がある。
While driving, you need to use your peripheral vision to watch out for pedestrians.
中心視覚 (central vision) refers to the sharp, detailed vision in the center of the visual field, while 周辺視覚 covers the surrounding area.
Compound of 周辺 (periphery) and 視覚 (vision). The exact historical derivation is uncertain; the term is a modern technical coinage.