Most intraocular foreign bodies cannot be expelled by themselves. When a foreign body is embedded or adhered to the surface of the cornea, remember not to rub the eye with your hand to avoid touching the foreign body and aggravating the depth of embedding, and the cornea will be infected by the foreign body, which will lead to corneal inflammation. Therefore, it is necessary to go to the hospital for regular treatment. Foreign bodies that penetrate the wall of the eye and remain in the eye should generally be removed surgically as soon as possible.