来自PIE*okw, 看,词源同optical.
HAMLET: My father -- methinks I see my father.Until late 14c. the English plural was in -an, hence modern dialectal plural een, ene. Of potatoes from 1670s. Of peacock feathers from late 14c. As a loop used with a hook in fastening (clothes, etc.) from 1590s. The eye of a needle was in Old English. As "the center of revolution" of anything from 1760. Nautical in the wind's eye "in the direction of the wind" is from 1560s.
HORATIO: Where, my lord?
HAMLET: In my mind's eye, Horatio.