I and several member of my family have congenital cataracts in both eyes - seems to have started with my grandmother, and seem to have approx 60% chance of passing them on to offspring.
We use eye drops (Atropine 1%) that relax the muscles that constrict the pupils, such that a larger amount of light can get into our eyes and get past the mass of the cataract. My pupils are almost permanently dilated as much as possible and with them I can go outside - regular people with the same eye drops could not go outside as it would be far too bright.
My (corrected) vision is 6/12 -1, so my vision is poor by most standards - it has not changed has far as we have records so I don't know what will happen over time. I'm currently 42, and have had nothing done to my eyes yet. When I visit my ophthalmologist we often chat about surgery options to get them removed, but she recommends that I don't have anything done until my vision starts to go downhill (she even has her own laser surgery practice)
My brother has has one eye corrected with laser surgery, and while his vision improved markedly it is still not 20/20. The ophthalmologist says (in my words) that because our eyes have never seen with normal vision our brain will not be able to understand a fully corrected image - seems to be basically correct based on my brother's experience. My niece had her cataracts removed at 6-months, and will need either contacts or glasses until she finishes growing, then she can have her lenses shaped to give her fairly normal vision.
Apparently our condition is not that uncommon - but I have never encountered anyone outside of my family with congenital cataracts.
(not sure what my point was with writing all that, but I fell better anyway)