Final answer:
Double vision, or diplopia, is a result of a loss of binocular vision.
Step-by-step explanation:
The loss of double vision, or diplopia, indicates a loss of binocular vision. Binocular vision refers to the ability of both eyes to work together to perceive a single image. When there is a disruption in binocular vision, such as in the case of double vision, the eyes no longer align properly, resulting in the perception of two images instead of one.