Minimum vision loss with which cataract -
In blue dot cataract, opacities are situated in the peripheral pa of adolescent nucleus and deeper layer of the coex.Opacities are usually stationary and do not affect vision. Zonular cataract is the most common type of congenital cataract presenting with visual impairement. IMG REF
Blue dot cataract
Zonular cataract
Anterior polar cataract
Posterior polar cataract
Lens