Meaning of OPTICAL in English
adj of or pertaining to vision or sight.
2. optical ·adj relating to the science of optics; as, optical works.
3. optical ·adj 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.
Webster English vocab. Английский словарь Webster. 2012