A lot vs. Alot: 9 Grammatical Pitfalls
c.1500, from Late Latin ocularis "of the eyes," from Latin oculus "an eye," from PIE root *okw- "to see" (cf. Gothic augo, Old English eage "eye;" see eye (n.)). As a noun, 1835, from the adjective.
ocular oc·u·lar (ŏk'yə-lər)
Of or relating to the eye or the sense of sight.
Resembling the eye in form or function.