An
eyepatch or
eye pad is a small patch that is worn in front of one
eye. It may be a cloth patch attached around the head by an elastic band or by a string, an adhesive bandage, or a plastic device which is clipped to a pair of glasses. It is often worn by people to cover a lost or injured eye, but it also has a therapeutic use in children for the treatment of
amblyopia.
(See orthoptics and vision therapy.) Eyepatches used to block light while sleeping are referred to as a
sleep mask. Eyepatches associated with pirates are a
stereotype originating from fiction.