An electrode device having an insertion part (12) adapted to be inserted into the suprachoroidal space of an eye so as to reach a service position, and an handling part (14) for manipulation of the electrode device, said electrode device comprising: —a support (25) having a distal part (31); —a set of wires (20) supported by said support and mobile between a retracted position in which said wires substantially extend along the support, and a deployed position in which respective parts of said wires, called “outside parts”, project from said distal part (31) of the support; —an electrically conductive element forming at least a portion of a said outside part or supported by a said outside part; —an electrical conductor (60) enabling, in said deployed position, an electrical connection between said electrically conductive element and an electrical generator; and —an actuator (16, 60) adapted for an operator to move the set of wires from said retracted position to said deployed position in said service position.