mydriasis

Tropicamide (Ro 1-7683) 是一种选择性的 M4毒蕈碱乙酰胆碱受体拮抗剂，作为滴眼剂使用时，会产生短效瞳孔扩张和睫状肌麻痹。

Dapiprazole Hydrochloride (Glamidolo Hydrochloride) 是 α-adrenergic 阻断剂的药物。

Moxisylyte, also known as thymoxamine, is a drug used in urology for the treatment of erectile dysfunction. It is an α1-adrenergic antagonist. Moxisylyte is also used for the short-term treatment of primary Reynaud's syndrome, a condition where the fingers and toes become discoloured in response to cold or emotional distress. Moxisylyte helps by improving blood circulation to the extremities. It is also used locally in the eye to reverse the mydriasis caused by phenylephrine and other sympathomimetic agents.

Dapiprazole, an alpha blocker, is used to reverse mydriasis after eye examination.

Methylatropine is an antagonist of muscarinic acetylcholine receptors (IC50= <0.1 nM in a radioligand binding assay using isolated porcine brain membranes) and a derivative of atropine .1,2It reduces acetylcholine-induced decreases in blood pressure in rats when administered intravenously with an ED50value of 5.5 μg/kg.2Methylatropine reduces salivation, induces mydriasis, and increases heart rate in dogs.3 1.Schmeller, T., Sporer, F., Sauerwein, M., et al.Binding of tropane alkaloids to nicotinic and muscarinic acetylcholine receptorsPharmazie50(7)493-495(1995) 2.Brezenoff, H.E., Xiao, Y.-F., and Vargas, H.A comparison of the central and peripheral antimuscarinic effects of atropine and methylatropine injected systemically and into the cerebral ventriclesLife Sci.42(8)905-911(1988) 3.Albanus, L.Central and peripheral effects of anticholinergic compoundsActa Pharmacol. Toxicol. (Copenh)28(4)305-326(1970)