Local heat compresses for mydriasis can be applied 3-4 times a day for 10-15 minutes each time, preferably with a small hot water bag. Heat compresses can promote blood circulation to the eyelids, relieving symptoms and promoting inflammation absorption so that the inflammation can subside quickly. When mydriasis first appears as a localized redness and pressure on the eyelid, the inflammation can quickly subside and the mydriasis can disappear if an early hot compress is applied. If the granuloma is already very large, the inflammatory component can be absorbed through hot compresses, and the pus head of the granuloma can appear. In short, hot compresses play a key role in the treatment of mydriasis.