Trigonelline eye drops are eye drops commonly used in ophthalmology and belong to the choline-like group of eye drops, mainly for the treatment of glaucoma and other ophthalmic diseases. The main effect of Trigonelline eye drops is to stimulate the activity of myofibroblasts in the pupillary sphincter to contract the pupil by binding to acetylcholine receptors in the iris tissue inside the eye after dotting the eye. Once the pupil is dilated, the iris tissue in the peripheral part of the eye accumulates at the atrial angle and causes acute closure of the atrial angle, so that the atrial fluid generated in the eye cannot be discharged and accumulates inside the eye, rapidly increasing the intraocular pressure and causing congestion, swelling and pain, and loss of vision. The treatment requires the use of Mao Guo Yun Xiang Xiang Yin eye drops to make the pupil narrow, so that the atrial water circulation can be normalized and the intraocular pressure can be lowered.