oc·u·lar 
(ŏkyə-lər)
(ŏkyə-lər)adj.
1.
a. Of or relating to the eye: ocular exercises; ocular muscles.
b. Resembling the eye in form or function: ocular spots; an ocular organ.
2. Of or relating to the sense of sight: an ocular aberration.
3. Seen by the eye; visual: ocular proof.
n.
The eyepiece of an optical instrument.
[Late Latin oculāris, from Latin oculus, eye; see okw- in the Appendix of Indo-European roots.]