Mydriasis Mydriasis Mydriasis () is the dilation of the pupil, usually having a non-physiological cause, or sometimes 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. A "mydriatic" pupil will remain excessively large even in a bright environment. The excitation of the radial fibres of the iris which increases the pupillary aperture is referred to as a mydriasis.
Into the Widening World Into the Widening World Into the Widening World is a collection of 26 short fictional coming-of-age stories. It was written by many authors including: Nadine Gordimer, Ben Okri, Bharati Mukherjee, Alice Munro and Gabriel Garcia Marquez. "Columba"- Michelle Cliff "Weight-Reducing Diet"- Jorge Edwards "On Sunday"- Mario Vargas "Artificial Roses"- Gabriel Garcia Marquez "The Raffle"- V. S. Naipaul "Exchange Value"- Charles Johnson "Borders"- Thomas King "Saints"- Bharati Mukherjee "The Turkey Season"- Alice Munro "The Gifts of War"- Margaret Drabble "The Nothingness Forest"- Margareta Ekstrom "Christmas"- John McGahern "That Wall, That Mimosa"- Merce Rodoreda "Date with a bird"- Tatyana Tolstaaya "Turkish Soldier