1)
Why did his eyes wear out?
1.
Rashi: They were constantly looking [for Your salvation]. Radak - since eyes look for people to help him, this is a metaphor for Hashem's help.
2.
Malbim: I have been hoping for consolation for a long time, and I have not been saved.
2)
From what does he desire consolation?
1.
Radak: For my affliction.