A device for injecting an intraocular lens into an eye, the device comprising: a tubular housing comprising a first module at a front end of the housing and a second module posterior to the first module, the first module and the second module being attached to each other in an attached configuration, the first and second modules (14,16) collectively defining a passageway extending from the second module, through the first module, to the front end of the housing, wherein the first module is adapted to removably mount a lens cartridge module configured to hold an intraocular lens on a lens cartridge module mount extending from the front end of the housing; and an injector rod moveable along said passageway over an operating range between a retracted position and an extended position, wherein as the rod moves from the retracted position to the extended position a front portion of the rod that is substantially surrounded by the first module in the retracted position moves into the cartridge module so as to displace the intraocular lens therefrom; wherein the second module includes an injector rod sleeve that protrudes from the second module, toward the front end of the housing, in cantilever fashion and that surrounds at least a portion of the rod longitudinally disposed therein, and wherein the injector rod sleeve is surrounded by the first module when the first and second modules are attached; wherein the first module is adapted to detach from the second module in a detached configuration, to thereby expose the front portion of the rod in the retracted position for cleaning, characterised in that the second module includes a seal member disposed within said passageway near a front end of the second module, the seal member and the rod being adapted to engage one another when the rod is in the retracted position. a tubular housing comprising a first module at a front end of the housing and a second module posterior to the first module, the first module and the second module being attached to each other in an attached configuration, the first and second modules (14,16) collectively defining a passageway extending from the second module, through the first module, to the front end of the housing, wherein the first module is adapted to removably mount a lens cartridge module configured to hold an intraocular lens on a lens cartridge module mount extending from the front end of the housing; and an injector rod moveable along said passageway over an operating range between a retracted position and an extended position, wherein as the rod moves from the retracted position to the extended position a front portion of the rod that is substantially surrounded by the first module in the retracted position moves into the cartridge module so as to displace the intraocular lens therefrom; wherein the second module includes an injector rod sleeve that protrudes from the second module, toward the front end of the housing, in cantilever fashion and that surrounds at least a portion of the rod longitudinally disposed therein, and wherein the injector rod sleeve is surrounded by the first module when the first and second modules are attached; wherein the first module is adapted to detach from the second module in a detached configuration, to thereby expose the front portion of the rod in the retracted position for cleaning, characterised in that the second module includes a seal member disposed within said passageway near a front end of the second module, the seal member and the rod being adapted to engage one another when the rod is in the retracted position.