I think this makes sense. If your brain has been relying on your sense of hearing for certain information your whole life, any new damage to that ability will l

I think this makes sense. If your brain has been relying on your sense of hearing for certain information your whole life, any new damage to that ability will leave your brain without that information. If you've never been able to hear, your brain has no dependence on sound for information. I wonder if the cognitive dropoff for Deaf people who get cataracts is more or less severe than for hearing people who get them, since presumably they're even more reliant on their sight for information than hearing people are.