There are many ophthalmic lasers in, and there are several glaucoma lasers alone: 1. Laser iris perforation: mainly used to lift pupillary block in patients with early angle-closure glaucoma. It is also used to communicate with the anterior and posterior chambers. It is easy and safe to operate, quick recovery after laser, few complications, no hospitalization, and low cost. It almost completely replaces the surgical iridotomy. 2.Laser atrial angioplasty: for iris 3.Selective laser trabeculoplasty: by hitting the trabecular meshwork (the pathway of atrial circulation under physiological conditions) with a low-energy laser and causing it to change accordingly to increase atrial aqueous drainage, mainly for open-angle glaucoma. 4.Transscleral ciliary body photocoagulation: The laser is applied to the ciliary body to reduce atrial aqueous production and to lower IOP. This procedure is usually performed only when filtration surgery fails or when filtration surgery is not appropriate. It is used for various clinically difficult to control advanced glaucoma (patients with near or complete loss of visual function and still high or painful intraocular pressure), such as neovascular glaucoma. 5.Endoscopic ciliary body photocoagulation: The endoscope is used to photocoagulate the ciliary body under direct vision to reduce the secretion of atrial fluid and achieve the purpose of lowering intraocular pressure. The effect is more accurate than external photocoagulation. 6.Laser suture cutting: The laser can cut the suture in the tissue without incision, and the operation is safe and simple.