1.The perception of having two images of a single object: An ambiopia is the double vision that exists when someone looks at something.

A person's ambiopia can be one of the first signs of a systemic disease; especially, a muscular or neurological process which may disrupt a person’s balance, movements, and/or reading abilities.

2. The status of using either eye alone at a given time: In order to avoid the simultaneous perception of two images of a single object, some people can use either the left or the right eye for each occasion.