ocular UK /ˈɒk.jə.lə/US /ˈɑ.kjə.lɚ/adjective 3noun 2forms 3 adjective3 •Of, or relating to the eye, or the sense of sightThe medication may have adverse ocular side effects.It took some time after he lost his eye for him to receive his ocular prosthesis. •Seen by, or seeing with, the eye; visual.Villain, be sure thou prove my love a whore, Be sure of it; give me the ocular proof: Or by the worth of man’s eternal soul, Thou hadst been better have been born a dog Than answer my waked wrath! — 1603 •Resembling the eye. noun2 •The eyepiece of a microscope or other optical instrument, i.e., the optical element closest to the eye. •Any of the scales forming the margin of a reptile's eye. formsoculars · more ocular · most ocular