I used to be an opthahalmic tech...here's what I can tell you.
It's not any worse than any other type of cataracts. All those fancy names basically only describe how advanced it is and where in the inter occular lens it is located.
Even though it may be more progressed, it's not more difficult to correct.
The surgical procedure to correct it would be the same regardless. If you have a mild, juvenile cataract, they'd take out the lens and put in a new one. If you had it so bad you were practically blind, they'd take out the lens and put in a new one.
The surgery is no biggie. (Although I know that's easy to
say to someone else.) One of the more minor procedures performed on the eye and it is really quick to heal. You just have to put drops in your eyes everyday for a while, but that's it.