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.
I Wouldn't Normally Do This Kind of Thing I Wouldn't Normally Do This Kind of Thing "I Wouldn't Normally Do This Kind of Thing" is the third single from Pet Shop Boys' fifth album "Very". It was released in the UK by Parlophone Records on 29 November 1993, where it eventually reached number 13 in the chart. It reached number 2 on the US Club chart where it was released in January 1994. It appears to describe a person, normally hesitant to unwind and show his feelings, who—because of some event in his life (possibly a love interest)—suddenly becomes willing to let it all hang out. It is