Mydriasis (/máµ»ËdraÉª.ÉsÉªs/) is the dilation of the pupil, usually defined as when having a non-physiological cause, but sometimes defined as potentially being a physiological pupillary response. Non-physiological causes of mydriasis include disease, trauma, or the use of drugs. Normally, as part of the pupillary light reflex, the pupil dilates in the dark and constricts in the light to respectively improve vividity at night and to protect the retina from sunlight damage during the day.
The Cold War Museum. The Strategic Defense Initiative (SDI): Star Wars. The Strategic Defense Initiative (SDI), also known as Star Wars, was a program first initiated on March 23, 1983 under President Ronald Reagan. The intent of this program was to develop a sophisticated anti-ballistic missile system in order to prevent missile attacks from other countries, specifically the Soviet Union.
Proxy wars were first defined by the way they manifested during the era of the Cold War: indirect confrontation between superpowers via substitute actors. These substitute actors could be smaller states or non-state actors. The intended purpose of proxy wars was to avoid an all-out nuclear war between the Cold War era superpowers. One of the well known examples of this type of proxy war is the Vietnam War. Vietnam was split by fighting between the communist state of North Vietnam and the Republic of South Vietnam.