What causes eye prisms?

Eye prisms are typically caused by a misalignment of the eyes, which can result from conditions such as strabismus, where the eyes do not properly coordinate. They can also be used in vision therapy to help correct double vision or improve binocular vision by bending light before it enters the eye. Additionally, prisms can be employed in glasses to redirect light and aid individuals with specific visual impairments. Overall, the use of prisms helps to enhance visual clarity and alignment.