Congenital cataracts do not cause blindness, but they can seriously affect vision. Congenital cataracts are caused by the degeneration of the lens, which blocks light from birth and causes the retina in the eye to fail to develop, which will eventually cause severe amblyopia. The nature of congenital cataracts is different from that of senile cataracts. After senile cataracts are done, vision can basically return to normal, while congenital cataracts, because the retina did not have time to develop, will eventually lead to severe amblyopia, but not so much that you cannot see at all. If not actively treated seeing will be very blurred and cannot be improved by wearing glasses. If not treated in time, it will also cause a series of problems such as nystagmus and strabismus. Whether or not to operate on congenital cataracts depends mainly on the severity. If both eyes are blocked especially in the center of the pupil, they should be treated with surgery in a timely manner.