An injector for an eye used for inserting an implant into an eyeball comprises an outer tube (11), and an implant holding structure (12,13) (middle and inner tube) arranged in the outer tube to be slidable with respect to the outer tube. The implant holding structure has an implant holding portion (13b) which can be contained in the outer tube and forms a space for containing the implant between the implant holding portion and the inner surface of the outer tube when it is contained in the outer tube. The implant holding portion projects from the outer tube when the implant holding structure is advanced and the implant can be taken out from the outer tube.
