The invention relates to a surgical positioning and fixing kit for the temporary or permanent fixation of areas of tissue or skin on a base, especially of mobile retina on the sclera of the eye, in which a positioning device (2) comprises a tubular handpiece (4) with a cannula (8) thereon at the outlet end of which a pin (16) connected with a thread (14) and consisting of a magnetisable material is provided, the pin being able to be held or released at the outlet end of the cannula by means of the thread (14) extending through the cannula (8) and the handpiece (4), and in which a fixing element (20) has the form of a magnetic plate (22) the form of whose inner surface corresponds to the outer region of the base. <IMAGE>
