A device for providing an access opening in a body, in particular for a spinal operation, comprised of a tubular device body (12) that extends along a longitudinal axis (L) of a device body, said body having a distal end (14) that is to be positioned inside a body and a proximal end (16) that is to be positioned outside a body, wherein in the region of the proximal end (16) an optics-carrier arrangement (28) with a movable optics-carrier (36) is positioned or can be positioned to have a path of motion (B) about the longitudinal axis of the device body, characterized in that that the optics carrier arrangement (28) comprises a guideway element (30) that carries the optics carrier (36), said guideway element having a guideway region (34) that can be positioned by means of pivoting about a swivel axis (S) in an operating position in the region of the proximal end (16) of the device body (12).
