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.
The Widening Gyre (album) there some of the fourteen tracks of this superb album. [...] Throughout the album, American and Irish tunes intertwine with each other and lay down a wonderful template sublimated by Mairéad Ní Mhaonaigh's crystalline voice and her fellow musicians' instruments. Once again, a nice piece of work." In December 2015, The Telegraph's culture editor Martin Chilton chose "The Widening Gyre" as one of the 70 best folk music albums of the year 2015. On 7 March 2015, "The Widening Gyre" entered the Billboard Top Ten World Music Albums Charts at #5 (its peak position ever) and hold #5 for six