Final answer:
Uncrossed diplopia is referred to as exotropia, where the double images appear side by side. It is different from esotropia, which causes crossed diplopia with superimposed images. Diplopia is associated with several causes that require medical diagnosis and treatment.
Step-by-step explanation:
Uncrossed diplopia, when one sees double vision where the images are side by side rather than one on top of the other, is referred to as exotropia. Exotropia is a type of strabismus, or misalignment of the eyes, where one or both eyes turn outward. The opposite condition, esotropia, is when an eye turns inward, and it leads to crossed diplopia, where the images are superimposed.
Diplopia itself is a term for double vision that can result from various causes, including neurological disorders, trauma, and other conditions affecting the eyes or brain. It's important to consult a healthcare professional for proper diagnosis and treatment if someone is experiencing diplopia.