cheiroscope

A haploscopic device used to assess and treat suppression in patients with binocular vision disorders. It consists of a viewing instrument that presents an image to one eye and a drawing pad seen by the other eye. The patient must use both eyes simultaneously to trace or draw the image presented, promoting binocular vision and reducing suppression. Cheiroscopes can also be used to evaluate binocular stability, alignment, and eye-hand coordination.