Most common cause of congenital cataract is

Blue dot cataract It is also called cataracta-punctata-caerulea. This is the most common type of congenital cataract. It usually forms in the first two decades of life. The characteristic punctate opacities are in the form of rounded bluish dots situated in the peripheral pa of adolescent nucleus and deeper layer of the coex Opacities are usually stationary and do not affect vision. Ref;A.K.Khurana; 6th edition; Page no:185 REF IMG