[op.tic] adj [ME, fr. MF optique, fr. ML opticus, fr. Gk optikos, fr. opsesthai to be going to see; akin to Gk opsis appearance, ops eye--more at eye] (14c): of or relating to vision or the eye
[2]optic n (1600) 1: eye
2. a: any of the elements (as lenses, mirrors, or light guides) of an optical instrument or system--usu. used in pl. b: an optical instrument