optics Riddle-Arnold Smith-Hall OPTICS optice -es (Vitr.). optics: optĭcē, ēs: Vitr. 1, 1, 3: cf. ib. § 16, where the phr. de visu is used to represent Gk ὀπτικὸς λόγος. Also optica, orum: Cartes Dioptr.