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.
The purpose of the NATO, aka North Atlantic Treaty Organization, was to form a union of European and North American countries against the communist Warsaw Pact nations of East â¦ ern Europe and the Soviet Union.t was formed to defend Western Europe against the USSR. â¦ The Warsaw Pact was the USSR's response to NATO. It was similarly an alliance of nations and was made of the USSR and the Communist Eastern European countries it occupied.