What is the term for the simultaneous use of both eyes?

The term for the simultaneous use of both eyes is binocular vision. This concept refers to the ability of the human visual system to use both eyes together to create a single image. Binocular vision is crucial for depth perception and enables the brain to combine the slightly different images from each eye into a cohesive three-dimensional perception of the environment.

Monocular vision refers to the ability to see with only one eye at a time, which does not provide the same depth perception achieved through binocular vision. Stereoscopic vision is related but is more specifically about the perception of depth based on the slightly different viewpoints of each eye; it relies on binocular vision but doesn't encompass the broader concept of simply using both eyes simultaneously. Converging vision is a term that may refer to the movement of the eyes inward when focusing on a nearby object, but it is not a standard term for the general simultaneous use of both eyes. Therefore, the defining characteristics of binocular vision make it the correct answer.