How is the double vision alleviated?
Prism can realign the images and allow single binocular vision in straight ahead gaze. Because the degree of the misalignment varies in different gaze positions, prism correction does not eliminate double vision in every gaze position. The power of prism can be reduced as the palsy improves. Patching one eye eliminates diplopia, however, this treatment must be carefully monitored in children to avoid the development of amblyopia.
