optical -- (of or relating to or involving light or optics; "optical supplies")
ocular, optic, optical, visual -- (relating to or using sight; "ocular inspection"; "an optical illusion"; "visual powers"; "visual navigation")
ocular, optic, optical, opthalmic -- (of or relating to or resembling the eye; "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")
(Sound)
