DOOR EYE It seems like you're referring to a peephole or a door viewer, commonly known as a "door eye." A door eye is a small optical device installed in doors to allow a person inside a building to view the outside without opening the door. It typically consists of a small fisheye lens or a wide-angle lens that provides a clear and wide view of the area outside the door. Peepholes are commonly used for security purposes, allowing residents to verify the identity of visitors before opening the door. They come in various designs and materials, but the basic principle is to provide a safe way to observe the outside without fully exposing oneself. #TOP10DOOREYE #BESTDOOREYE #DOOREYE #TOPDOOREYE #NO.1DOOREYE