Coloboma of the iris is defined as: March 2012

Ans: C i.e. Poorly developed uveal tissues Conditions & their definitions Continued existence of pa of the anterior vascular sheath of the lens (a foetal structure which normally disappears sholy before bih) is known as persistent papillary membrane Absence of iris is known as aniridia In colobomata, the tissues of the uvea & the associated retinal tissues or their prolongation onto the back of the iris are badly developed/ deficient Owing to the absence of the pigment in the eye in patients of albinism, iris looks pink