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.
Public Opinion Polls. One of the main ways public opinion is determined is through public opinion polls. These are surveys commissioned by various groups in order to determine people's thoughts on particular matters.