It most often occurs because of penetrating head wounds. The frontal and temporal lobes are frequently involved. Of course this type of injury could occur anywhere in the brain. Dysphagia, aphasia, apraxia, dysarthria, paralysis, as well as visual and other problems can occur.
Double vision redirects here. For other uses, see Double vision (disambiguation). Diplopia, commonly known as double vision, is the simultaneous perception of two images of a single object that may be displaced horizontally, vertically, diagonally (i.e., both vertically and horizontally), or rotationally in relation to each other.
Why: Unilateral double vision (i.e. double vision that persists when one eye is covered) is rare, but it can be encountered in dislocated lens (as associated with Marfan's syndrome), as well as in congenital double pupil, cataracts, astigmatism, corneal opacities and hysteria.