Safety and Tolerability of KH658 Gene Therapy in Subjects With Neovascular Age-related Macular Degeneration (nAMD)

Inclusion Criteria: 1. Are willing and able to sign the informed consent form (ICF); 2. Female and male aged 50 to 85 years (inclusive) with nAMD; 3. Have previously received anti-VEGF treatment for nAMD, with documented response to anti-VEGF therapy and a minimum of 2 anti-VEGF IVT injections in the study eye in the 6 months prior to screening; 4. Have a ETDRS BCVA letter score of 83 to 19 (approximately 20/25 to 20/400 Snellen equivalent) in the study eye at Screening; 5. Have a ETDRS BCVA letter score of ≥19 in the fellow eye at Screening; 6. Females must be at least 1 year postmenopausal. Exclusion Criteria: 1. Have any other cause of CNV (such as pathological myopia, etc.) in the study eye; or non-nAMD disease in the study eye judged by the investigator that could impact macular examination or affect central vision (such as diabetic retinopathy, central retinal vein occlusion, etc.); 2. Any condition preventing visual acuity improvement in the study eye, e.g. fovea scar, fibrosis or atrophy; 3. Have a subretinal hemorrhage that is either 50% or more of the total lesion area, or blood is greater than 1.0 mm2 under the fovea in the study eye at screening; 4. Have any vitreous hemorrhage or history of vitreous hemorrhage in the study eye; 5. Presence of an implant (excluding intraocular lens), opacification of the refractive medium or miosis that affects fundus examination; 6. Have a history of or presence of retinal detachment or choroidal detachment in the study eye.