What is the origin of the idiom "in the public eye" and when to use it?

The idiom "in the public eye" has been in use since at least the mid-19th century. The origin of the phrase is not known with certainty, but it is likely that it developed from the idea of being watched by a crowd or audience. It may have also been influenced by the concept of the "all-seeing eye," which has been used in religious and mystical contexts for centuries to represent godly knowledge. The idiom "in the public eye" is commonly used in English to refer to someone or something that is being observed, watched, or scrutinized by the general public. It can be used to describe people, organizations, events, or any other entity that is subject to public attention.