Mydriasis disorders e.g. epilepsy, stroke, and impending brain herniation are known to lead to temporal mydriasis as well. A brain catastrophe, or a rapidly increasing brain mass, can cause compression of the oculomotor nerve. In cases of head injury or orbit trauma (eye injury), the iris sphincter (the muscle responsible for closing the pupil) or the nerves controlling it can be damaged, reducing or eliminating the normal pupillary light reflex. A mydriatic is an agent that induces dilation of the pupil. Drugs such as tropicamide are used in medicine to permit examination of the retina and other deep structures of the
State River Widening State River Widening State River Widening, named after the title of a Chinese propaganda photo, are a London based trio, formed in May 1998, comprising multi-instrumentalists David Sheppard and Keiron Phelan, along with drummer/percussionist Jon Steele. Friends from school (in south London) Sheppard and Phelan began experimental recordings in 1996, soon hooking up with percussionist Steele to leaven their intertwining, Nick Drake-like acoustic guitars with vigorous yet dexterous drumming. A debut single, "Unsung Couples", was released on the Gold Hole label in November 1998. SRW’s hypnotic cycles of avant-rock melody connected with an audience then thrilling to similarly inclined practitioners