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 Cold War influenced nearly all aspects of American political and cultural life from 1946 -- when Winston Churchill announced the descent of an Iron Curtain separating the Soviet Union and her Eastern European satellite states from the non-communist West -- to the disintegration of the Soviet Union in 1991.he first and most successful of the Air Force films, Strategic Air Command (1955), was directed by Anthony Mann at the urging of the film's star, ex-bomber pilot Jimmy Stewart, who wanted to make a film honoring the Air Force's cold warriors.