Eye scope (Earth-2356)

An eye scope is an equipment used in the eye that functions as a telescope. The rogue Jedi and Akatsuki member Deidara used an eye escope in his missions. A long-range fighter by nature, the device allowed Deidara to see his targets from a distance and allowed him to discern the range between himself and other objects, being usually hidden underneath his long hair.

Source

 * https://naruto.fandom.com/wiki/Eye_Scope