Entropion or inward turning of the lower eyelid causes rubbing of the lashes against the eye resulting in excess tearing, discharge, foreign body sensation, irritation of the cornea and impaired vision. It should be corrected as early as possible to prevent permanent visual damage. Eyelids that turn outward is a condition called Ectropion. It is often an effect of the aging process, but may also result from tumor, injury, burns or facial palsy. Ectropion can cause excessive tearing, crusting, infection, corneal damage, and impaired vision. This condition can be corrected surgically.