Neuro-Ophthalmology & Neuro-Otology
Diplopia, or double vision, is the sensation of seeing 2 copies of a viewed object. It arises because of disturbed optical elements within the eye (monocular diplopia) or ocular misalignment (binocular diplopia). Monocular diplopia is usually caused by an uncorrected refractive error or a deformity in the cornea or lens. In binocular diplopia, ocular misalignment causes diplopia because the fixating eye views the object of regard with the fovea, whereas the nonfixating (deviating) eye views it with a parafoveal retinal element.
Nov. 22, 2020