A hand-held device consisting of a series of lenses and prisms, used to magnify objects so that they can be better seen from a distance, and looked at through both eyes.
eyeglass
noun
An artificial lens, especially one of a pair.
An eyepiece.
A monocle.
How often have the words binoculars and eyeglass occurred in a corpus of books? (source: Google Ngram Viewer )