Eyelid injuries usually occur as a result of sharp trauma from sticks or projectiles during play or while working around the house. Commonly dog bites can cause severe eyelid injuries. If the eyelid tissue becomes cut or torn it may involve not only the eyelid but the structures that drain tears from the eye. Lacerations of the eyelid or the tear drainage system require evaluation by an ophthalmologist and may require repair in the operating room with stitches and potentially a tube in the drainage system. Any injury to the eyelid can also be associated with injury to the eyeball so a complete examination of the eye must be performed to make certain there is no injury deeper than on the surface of the eye.