And God opened her eyes, and she saw a well of water; and she went, and filled the bottle with water, and gave the lad drink. Genesis 21:19
And God opened her eyes. i.e. she now perceived the well of water which was quite near her, but which in her anguish of mind she had overlooked.
“The Hebrew phrase to open the eyes is exclusively employed in the figurative sense of receiving new sources of knowledge, not in that of regaining the sense of sight” (Maimonides).
(Hertz, Dr. J.H., The Pentateuch and Haftorahs, 2nd Ed., Soncino Press, London, 1992, pg 72)