WordNet
n. vision with only one eye
Wikipedia
Monocular vision is vision in which both eyes are used separately. By using the eyes in this way, as opposed by binocular vision, the field of view is increased, while depth perception is limited. The eyes of an animal with monocular vision are usually positioned on opposite sides of the animal's head, giving it the ability to see two objects at once. The word monocular comes from the Greek root, mono for one, and the Latin root, oculus for eye.
Usage examples of "monocular vision".
He was a lot better than average shot himself, but he was aware that his monocular vision prevented him from ever being outstanding.
Our driver had scar tissue covering his right cheek and a broad, black patch over his eye that made me speculate idly about monocular vision and depth perception as we weaved in and out of heavy traffic on VIP Highway.