I object to the death penalty and object to this for the same reason - it's barbaric and it's not something a healthy society should be dishing out. So, yes, I strongly oppose the blinding of this man. (a large part of my opposition to punishments like this is that a)they're irreversible and b)the justice system, of any country, is never 100% right - I cannot accept the risk of punishing the innocent)
However, I completely understand the feelings of the woman this happened to, and feel that she deserves compassion, as does her position. How would you feel if this had happened to you? Your sister?
Also re: retribution - this is human, I don't see why she's being derided for it. Retribution, whether people feel comfortable admitting it or not, often plays a part in the death penalty in the US.
Do I think retribution should be a part of the legal system? No. Do I understand that wishing for it is entirely natural and human? Yes.
In my perfect world, this man would spend the rest of his life in a non-too-comfortable prison. Violent crimes are, imo, not punished harshly enough (although I'm mostly talking about the west here, not the middle east!).