An eye patch is a small piece of material that is worn over one eye. It is often used to protect an injured or recovering eye, helping to prevent further damage or irritation. Eye patches can also be used in the treatment of conditions like strabismus or amblyopia, where one eye may not be functioning properly. Eye patches come in various styles and materials, including fabric, plastic, and adhesive types. They are commonly used in both medical settings and for fashion purposes, often associated with characters like pirates. Wearing an eye patch can help improve vision in the affected eye by encouraging its use.