Eversion or turning outward, as of the margin of an eyelid.

• cicatricial e. — caused by contraction of scar tissue following injury or surgery to the eyelid.
• congenital e. — most commonly seen in some breeds of dogs, such as St. Bernard, Bloodhound and spaniels where it may be considered normal. Called also heritable ectropion.
• heritable e. — see congenital ectropion (above).
• intermittent acquired e., physiological e. — may occur in some dogs intermittently for unknown reasons.
• physiological e. — see intermittent acquired ectropion (above).

Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.