Flickering lights in vision, Headache and Sudden flash of lights. WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms flickering lights in vision, headache and sudden flash of lights including Migraine headache (adult), Tension headache, and Ocular migraine.
1 There are areas of commonality, or consensus, within American public opinion, including consensus on the legitimacy of the government, equality of opportunity, liberty, and democracy.
1 Public opinion is the aggregation of many citizensâ views and interests regarding political issues, leaders, institutions, and events. 2  Preferences reflect what people want and are characterized by their intensity; beliefs reflect what people know and how they understand the world.