[{"Bold_text": "adjective", "List Items": ["of, relating to, or applying optics the principles of optics.", "constructed to assist sight or to correct defects in vision.", "of or relating to sight or vision; visual.", "of or relating to the eye.", "of or relating to an optician or opticians or to their products, especially eyeglasses:an optical service.", "dealing with or skilled in optics."]}, {"Bold_text": "noun", "List Items": ["opticals. optical effects optical effects."]}]