<unk>  stimulates the secretion of large amounts of saliva and sweat. It is used to prevent or treat dry mouth, particularly in Sjögren syndrome, but also as a side effect of radiation therapy for head and neck cancer. It may be used to help differentiate Adie syndrome from other causes of unequal pupil size. It may be used to treat a form of dry eye called aqueous deficient dry eye (ADDE) Surgery<unk>  is sometimes used immediately before certain types of corneal grafts and cataract surgery. It is also used prior to YAG laser iridotomy. In ophthalmology,<unk>  is also used to reduce symptomatic glare at night from lights when the patient has undergone implantation of phakic intraocular lenses; the use of<unk>  would reduce the size of the pupils, partially relieving these symptoms. The most common concentration for this use is<unk>  1%.<unk>  is shown to be just as effective as apraclonidine in preventing intraocular pressure spikes after laser trabeculoplasty. Presbyopia In 2021, the US Food and Drug Administration approved<unk>  hydrochloride as an eyedrop treatment for presbyopia, age-related difficulty with near-in vision. It works by causing the pupils to constrict, increasing depth of field, similar to the effect of pinhole glasses. Marketed as Vuity, the effect lasts for 7 to 10 hours. Other<unk>  is used to stimulate sweat glands in a sweat test to measure the concentration of chloride and sodium that is excreted in sweat. It is used to diagnose cystic fibrosis.
Pilocarpine
Timolol
Avacopan
Ibotenic acid
Tropicamide
Dihydroergotamine
Oxymetazoline
Beclamide