[{"Bold_text": "noun", "List Items": ["(used with a singular verb)the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision.", "(used with a plural verb)the way a situation, action, event, etc., is perceived by the public or by a particular group of people:The optics on this issue are pretty good for the Democrats.Administrators worry about the bad optics of hiring new staff during a budget crisis."]}]