Diplopia

n. double vision, disorder of the vision in which one object is seen as two

Diplopia, commonly known as double vision, is the perception of two images from a single object. The images may be horizontal, vertical, or diagonal .
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Diplopia /di·plo·pia/ the perception of two images of a single object. binocular diplopia double vision in which the images of an object are [more]Diplopia - Community and Resources

Noun
1. visual impairment in which an object is seen as two objects; "diplopia often disappears when one eye is covered"
(synonym) double vision
(hypernym) visual impairment, visual defect, vision defect, visual disorder

n. diplopia, double vision, disorder of the vision in which one object is seen as two