An injection device for injecting a product into an eye, said device comprising an injection needle and a support on which the injection needle is fixed, said device being characterized in that it comprises a locating mark disposed in such a way that the latter can be placed in contact with a defined bearing region of the surface of the eye, before any contact of the injection needle with said surface, and can then be kept in contact with said bearing region during a stage of penetration of said injection needle through said surface of the eye.
