Fig. 1

The technique of intra-arterial chemotherapy (IAC) treatment. a: An arteriogram was performed to indicate the takeoff of the ophthalmic artery from the internal carotid artery. b: Using fluoroscopy and roadmap guidance, the microcatheter selectively catheterized the ophthalmic artery. c: As soon as the microcatheter was in a stable position at the ostium of the ophthalmic artery, then pulse-inject drugs