Adjective
weak-eyed (comparative more weak-eyed, superlative most weak-eyed)
Having poor eyesight.
Now air is hushed, save where the weak-eyed bat, With short shrill shriek flits by on leathern wing, Or where the beetle winds His small but sullen horn, As oft he rises 'midst the twilight path, Against the pilgrim borne in heedless hum. William Collins