It is the eversion of the eyelid in such a way that the inner surface is exposed, almost always affecting the lower eyelid, and caused by the aging process. The connective (supporting) tissue of the eyelid becomes weak, this causes the eyelid to turn outward, so that the inner part of the lower eyelid is no longer against the eyeball. It can also be caused by a) A defect that occurs before birth (for example, in children with Down syndrome) b) Facial paralysis c) Scar tissue from burns.

Treatment: they can be treated with the use of artificial tears or other lubricants, which relieve dry eyes and keep the cornea hydrated to avoid injury, but the only possible correction of this problem is the surgical alternative.