definition of
optical

[1] #1 optical a. of or relating to or involving light or optics; "optical supplies". wn

[2] #2 optical a. [ocular, optic, visual] relating to or using sight; "ocular inspection"; "an optical illusion"; "visual powers"; "visual navigation". wn

[3] #3 optical a. [ocular, optic, 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". wn