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
What a Pleasure Stakes What a Pleasure Stakes The What a Pleasure Stakes is an American flat Thoroughbred horse race for two-year-olds held annually at Calder Race Course in Miami Gardens, Florida. It is currently an ungraded stakes race run over a distance of 8.5 furlongs on dirt. The race has traditionally been held during the Tropical at Calder meet, from late October through early January. This meet normally has some of the strongest stakes programs of Calder’s eight-month season. Due to permit disputes with Hialeah Park Race Track, the race was pushed back in 1987 and 1991 into the following year. Both of