entropian: A complex genetic condition that results in the turning
in of the upper or lower eyelid, potentially resulting in corneal
ulceration.
extropian: A complex genetic condition that results in the turning
out of the upper or lower eyelid, potentially resulting in corneal
ulceration.
--http://www.io.com/~wilf/dogs/glossary.html
-mitch
http://www.thehub.com.au/~mitch