'optical' definitions:

Definition of 'optical'

(from WordNet)
adjective
Of or relating to or involving light or optics; "optical supplies"
adjective
Relating to or using sight; "ocular inspection"; "an optical illusion"; "visual powers"; "visual navigation" [syn: ocular, optic, optical, visual]
adjective
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" [syn: ocular, optic, optical, opthalmic]