Inclusion Criteria:  Age 18-75; The best-corrected visual acuity (BCVA) of the included eyes was <0.01 (Snellen chart); The BCVA of the contralateral eye of the included subjects was >0.1; Patients with clinically diagnosed neovascular glaucoma; The diagnostic criteria for neovascularization glaucoma were as follows: Intraocular pressure > 21mmHg measured by Goldmann applanation tonometer; Neovascularization is seen in the iris or anterior chamber angle, with or without corneal edema; Compliance with follow up for more than 28 days and written informed consent obtained;  Exclusion Criteria:  Intravitreal injection of anti-VEGF drugs within 3 month before enrollment; Participation in other clinical trials within 1 month; Suffering from other ocular diseases that affect ocular examinations (e.g. keratopathy, uveitis, intraocular infection, etc.); Those who plan to receive ocular surgery during the follow-up period; Premenopausal women without birth control; Having other systemic diseases such as severe liver and kidney function damage, cardiovascular disorders, respiratory disorders, etc.) that may affect the anti-neovascular effect of KDR2-2 or more likely to develop adverse events ; Systemic infections under treatment; Any study in which the physician believes that the patient's condition will interfere with the clinical trial (e.g., the patient is prone to stress, mood disorders, depression, etc.);