Psalms 119:82

Mine eyes fail. — The failing of the eyes is here evidently to be understood of the effort of straining to catch or keep sight of a distant object, not, as so frequently in the Psalms (see Psalms 6:7, &c), from sickness or even grief. Comp.

“I would have broke my eye-strings, cracked them, but
To look upon him.” — SHAKESPEARE: Cymbeline.