optical

adj. visional; of the eye; of vision

Optics ( appearance or look in Ancient Greek) is a branch of physics that describes the behavior and properties of light and the interaction of light with matter. Optics explains optical phenomena. The field of optics usually describes the behavior of visible, infrared, and ultraviolet light; however because light is an electromagnetic wave, analogous phenomena occur in X-rays, microwaves, radio waves, and other forms of electromagnetic radiation. Optics can thus be regarded as a sub-field of electromagnetism. Some optical phenomena depend on the quantum nature of light relating some areas of optics to quantum mechanics. In practice, the vast majority of optical phenomena can be accounted for using the electromagnetic description of light, as described by Maxwell's Equations.
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Adjective
1. relating to or using sight; "ocular inspection"; "an optical illusion"; "visual powers"; "visual navigation"
(synonym) ocular, optic, visual
(pertainym) sight, vision, visual sense, visual modality
2. of or relating to or involving light or optics; "optical supplies"
(pertainym) optics
3. 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"
(synonym) ocular, optic, opthalmic
(pertainym) eye, oculus, optic

(a.)
Relating to the science of optics; as, optical works.
  

(a.)
Of or pertaining to vision or sight.
  

(a.)
Of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina. See Illust. of Brain, and Eye.
  

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