visual (a)
optical (a)
optic (a)
ocular (a)

Definition: relating to or using sight
Example: ocular inspection. an optical illusion. visual powers. visual navigation.

optical (a)
optic (a)
ophthalmic (a)
ocular (a)

Definition: of or relating to or resembling the eye
Example: ocular muscles. an ocular organ. ocular diseases. the optic (or optical) axis of the eye. an ocular spot is a pigmented organ or part believed to be sensitive to light. ophthalmic defect.

eye (n)
oculus (n)
optic (n)

Definition: the organ of sight