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
The Widening Gyre (album) lots of new stuff to savor and some reinventions of recognizable material as well, interpreted by some of the best musicians you can find in roots music.". "The Widening Gyre" received a four star album review (out of 5) from The Irish Times's reviewer Siobhan Long, stating that Altan "have reinvigorated their sound in the process of [recording in] Nashville with newcomer Martin Tourish on piano accordion [and] an all-star cast [of Appalachian bluegrass musicians]". The Arts Desk website's music critic Peter Quinn, stated: "Listeners looking for the uniquely driving tune sets that Altan are famous for have plenty to