Glaucoma is a common clinical blinding eye disease, currently surgery is the principal way, but the recurrence rate after surgery is still high, the main reason is fibroblasts in the operation area, which lead to scar formation blocking filtration road. To improve the success rate of surgery, a number of anti-cicatricial drugs are increasingly being applied in glaucoma filtration surgery in experimental and clinical studies, but these drugs also have certain complications and side effects. As medical technology advances, people are looking for some safer and more effective drug delivery methods and new drugs that inhibit scar formation.