Denaturation, cataract

I just found out that cataract is the process of protein denaturation which means almost the same processes which happens when frying eggs. In the beginning of cataract there's possibility to perform so called renaturation - which is magical process of restoring proteins properties, but progressive cataracts can't be cured like this, because molecules can't be always restored by renaturation.

Now I know that cataracts mostly happens because of wrong molecular temperature caused by emission, radiation and corrosion, all of which mostly a mechanical process.