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Poppers is an inhaled drug which contains a range of alkyl nitrites, such as isobutyl nitrite and amyl nitrite. [11] Despite its primary usage as a potent vasodilator , [ 11 ] its popularity among the homosexual community largely stems from its ability to facilitate anal sexual intercourse by relaxing the smooth muscles in the internal anal ...
The primary causes include post-cataract surgery, certain medications, and, less commonly, neurological or ophthalmological conditions. Post-cataract surgery is a common cause, as replacing the natural lens with a synthetic one increases exposure to blue light, leading to temporary blue-tinted vision. This effect usually resolves as the eye adapts.
Non-physiological causes of mydriasis include disease, trauma, or the use of certain types of drugs. It may also be of unknown cause. It may also be of unknown cause. 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 ...
Medications for glaucoma usually come in the form of medicated eye drops. Prostaglandins (Xalatan, Travatan Z, Vyzulta): These help to relieve pressure by increasing the outflow of your aqueous ...
Organophosphates are used as insecticides, medications, and nerve agents. [4] Symptoms include increased saliva and tear production, diarrhea, vomiting, small pupils, sweating, muscle tremors, and confusion. [2] While onset of symptoms is often within minutes to hours, some symptoms can take weeks to appear. [5] [1] Symptoms can last for days ...
Dilation and constriction of the pupil Pupillary response is a physiological response that varies the size of the pupil between 1.5 mm and 8 mm, [ 1 ] via the optic and oculomotor cranial nerve. A constriction response ( miosis ), [ 2 ] is the narrowing of the pupil, which may be caused by scleral buckles or drugs such as opiates / opioids or ...
Concerning the 2017 data in the charts below, deaths from the various drugs add up to more than 70,200 because multiple drugs are involved in many of the deaths. [2] According to the National Safety Council, the lifetime odds of dying from an overdose in the United States is 1 in 96. [68] Drug overdose deaths in the US per 100,000 people by state.
Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, in particular the large arteries and small arterioles. The process is the opposite of vasodilation, the widening of blood vessels. The process is particularly important in controlling hemorrhage and reducing acute blood loss.