There are no strict dietary contraindications for patients with glaucoma, but the main thing is to pay attention to not eating a lot of food with high water content at one time, such as drinking a lot of soup, beer and eating too much watermelon and other fruits. Glaucoma is a disease caused by elevated intraocular pressure (IOP), which can compress the optic nerve and impair visual function. Glaucoma is characterized by visual field defects and loss of vision. Symptoms such as eye swelling and pain, and redness of the eyes may also occur when the intraocular pressure is elevated. Glaucoma patients who consume a lot of fluid at one time, such as drinking a lot of water, drinking alcohol, eating too much watermelon, drinking too much soup, etc., are prone to increase the secretion of aqueous humor, which will further increase the intraocular pressure and thus aggravate the condition of glaucoma, so the above situations must be avoided.