ocular
oc-u-lar
noun
The eyepiece of an optical instrument, such as a microscope or telescope.
"Look through the ocular to see the specimen."
adjective
Relating to the eyes or vision; connected with sight.
"She experienced some ocular discomfort."
Thesaurus
Synonyms: seeable, visible, visual, eyepiece, optic, optical, ophthalmic