A measure of the number of eyes needed to see something, i.e. monocular or binocular.

The eyepiece of a microscope or other optical instrument. / Any of the scales forming the margin of a reptile's eye.

Of, or relating to the eye, or the sense of sight / Resembling the eye. / Seen by, or seeing with, the eye; visual.

plural of ocular

Alternative spelling of extraocular

(mycology, biology) A measuring instrument that is inserted into the eyepiece of a microscope, used to measure microscopic features.

plural of ocular micrometer