Distichiasis

Distichiasis

 Hereditary and congenital condition

 Extra posterior row of cilia, occasionally present in all four lids

 Partial

Complete 

 They occupy the position of meibomian gland orifices

 Eyelashes may irritate cause to corneal epithelial defects

 May be also seen in Stevens Johnson’s syndrome—acquired distichiasis

 Treatment:

By cryotherapy or excision with grafting.

Congenital Lid Conditions: Ophthalmology Spot Diagnosis Series

Coloboma of the Eyelid

 A notch or defect of the lid margin

 Unilateral 

 or bilateral ; upper or lower

 Upper lid coloboma: At the junction of middle and inner thirds

 May be associated with Goldenhar syndrome

 Lower lid coloboma: At middle and outer thirds junction

 Associated with Treacher Collins syndrome

 May be acquired in traumatic cases

 Treatment: 

Urgent plastic repair at a very early age to prevent exposure keratitis and corneal ulcer.