A device for injecting an intraocular lens, the device including a syringe body (1) having a piston (2) mounted therein. The body (1) constitutes a single piece and includes a cylindrical portion (3) capable of containing the lens (4) in a non-deformed state, an injection endpiece (6), and a conical intermediate portion (5). The body does not have a cylindrical opening or auxiliary system (such as a cartridge, a flap, a slide, a removable endpiece) for loading the lens.