Where did the bible say Paul had poor eyesight?

This verse suggests that Paul had trouble with his eyes:

Galatians 4:15 What then was the blessing you enjoyed? For I bear you witness that, if possible, you would have plucked out your own eyes and given them to me.

And this verse also suggests his eyesight was poor:

Gal 6:11 See with what large letters I have written to you with my own hand!