Putting on a cornsore patch can basically heal it until about 10 days. A cornsore patch can usually be used for 3 days and then replaced with a new one. After using the first corneal patch, you can see the corneal plugs of the corneal loosening, and use the 3rd-4th corneal patch, which is about 7-10 days of treatment, you can see the corneal completely fall off. When you put it on, you should pay attention to the stability of the ointment in the corneal patch, do not stain the surrounding skin tissue, corneal patch is relatively strong, misalignment is easy to cause damage to the surrounding normal skin, at the same time, when you put it on, you should pay attention to the waterproof, to prevent bacterial infection. In addition, if the corns are not effective, you can use liquid nitrogen freezing and laser treatment.