Mydriasis More generally, mydriasis also refers to the natural dilation of pupils, for instance in low light conditions or under sympathetic stimulation. An informal term for mydriasis is blown pupil, and is used by medical providers. It is usually used to refer to a fixed, unilateral mydriasis, which could be a symptom of raised intracranial pressure. The opposite, constriction of the pupil, is referred to as miosis. Both mydriasis and miosis can be physiological. Anisocoria is the condition of one pupil being more dilated than the other. There are two types of muscle that control the size of the iris: the
The Widening Gyre (album) between masters of American roots music and Celtic music. Mairéad stated: «The title "The Widening Gyre" appeals to us and depicts the spiral of life, widening and embracing the new. It has an innate energy. We think that idea is reflected in the album's music». "The Widening Gyre" is a compelling development in Altan's story proving that they are still growing as artists, even after nearly thirty years together — the longest running lineup of founding members in Irish music. Altan recorded the new album over ten days from 29 July to 7 August 2014 entirely in Nashville, Tennessee (at