Several complications can occur after cataract surgery, and symptomatic treatment must be made according to the causes of each complication. If the choroidal detachment is accompanied by incisional leakage, the incision should be re-sutured to form an anterior chamber; if the choroidal detachment is large, posterior scleral dissection and drainage in the detached area can accelerate the recovery of IOP and reset the choroidal detachment; if the detachment is small and there is no obvious However, the most fundamental measure is to re-communicate the anterior and posterior choroidal traffic, and iridotomy can achieve this purpose, and peripheral iridotomy with YAG laser is easier. 2. Since the damage to the corneal endothelium is irreversible, once persistent corneal edema occurs, recovery of corneal optics depends on partial penetrating corneal transplantation; for patients who are inconvenienced by corneal transplantation, symptoms can be relieved locally by hypertonic agents, soft contact lenses or conjunctival flaps to cover the epithelial cell layer in the lesion area after removal, and intraoperative instruments and IOLs should be avoided to contact the corneal endothelium, and viscoelastic agents should be used to protect the The contact between the vitreous and other tissues and the corneal endothelium can reduce the occurrence of persistent corneal edema after surgery to a greater extent. 3, a small amount of anterior chamber blood accumulation is usually absorbed naturally within a few days, the accumulation of blood filled with anterior chamber with high intraocular pressure should be immediately flushed anterior chamber, vitreous accumulation of blood in a small amount can be absorbed, a large number of posterior segment vitrectomy should be performed, epithelial implantation of the anterior chamber of the treatment effect is not good, the prognosis is poor, once diagnosed, should immediately remove the deep sclera near the incision of the lesion area, and freeze the hyperplastic epithelial tissue behind the affected area of the cornea, remove To ensure that the vitreous body does not adhere to the cornea, anterior vitrectomy should also be performed. Postoperative uveitis can generally be controlled with corticosteroids, prostaglandin inhibitors and pupil dilators, but the cause of the disease should be searched for and treated. Once endophthalmitis is suspected after cataract surgery, the atrial fluid and vitreous should be immediately aspirated for bacterial or fungal culture and drug sensitivity test, the affected vitreous should be removed with vitreous cutter and antibiotics should be injected into the vitreous cavity, vein and subconjunctiva, the treatment of postoperative glaucoma should be local and systemic hypotensive treatment and etiological treatment at the same time, when the conservative treatment of abnormal IOL position is ineffective, generally take YA G laser capsulotomy is the simplest and most effective method to treat posterior capsular clouding, if an IOL has been implanted, laser incision should avoid damaging the IOL; in addition, a puncture knife can be used to enter the eye from the flat part of the ciliary body to incise the clouded and thickened central part of the posterior capsulorhexis, for retinal complications such as macular cystoid edema For retinal complications, such as macular cystoid edema, anti-inflammatory pain and corticosteroids should be applied, while retinal detachment should be treated surgically.