Distichiasis is-
*Distichiasis i.e. an abnormal extra row of cilia taking place of meibomian glands. Ref: Khurana ophthalmology 7th/e p.386
Abnormal inversion of eyelashes
Abnormal extra row of cilia
Abnormal eversion of eyelashes
Misdirected cilia
Diseases of orbit, Lids and lacrimal apparatus