1) Dog disease 
A distichia is an eyelash that arises from an abnormal spot on the eyelid. The mutation affects dogs and humans. Distichiae usually exit from the duct of the meibomian gland at the eyelid margin. They are usually multiple and sometimes more than one arises from a duct. They can affect either the upper or lower eyelid and are usually bilateral. The...
(dis-tik´e-ә) distichiasis.