What is the term for double vision?

The term for double vision is "diplopia." This condition occurs when a person sees two images of one object instead of a single image. Diplopia can result from various underlying causes, including issues related to the eye muscles, nerves that control eye movement, or conditions affecting vision. Understanding diplopia is important in the optical field, as it can significantly impact a person’s quality of life and requires appropriate assessment and potential management solutions.

Monocular vision refers to vision in one eye, which does not produce the double images characteristic of diplopia. Binocular disparity is a term describing the slight differences in images received by each eye, contributing to depth perception, rather than indicating double vision. Strabismus is a condition where the eyes do not properly align with each other when looking at an object, which can lead to diplopia, but it specifically refers to the misalignment itself rather than the experience of seeing double.