Eyeglasses of the rimless type, of the type without retaining rims for the lenses (20a, 20b), which provides a discontinuous frame which consists of: • a central bridge, suitable for connecting said lenses to each other and for supporting them in the correct position of use with spacing arms (112 - 113) and supporting nose pads; • two side end pieces (102a, 102b), suitable for connecting each lens to the corresponding side temple (103a, 103b) like a joint and base element for a hinge; • two side temples (103a, 103b) joined to the corresponding end pieces (102a, 102b) with a hinge constraint; • means for fixing the bridge and the end pieces (102a, 102b) to the lenses (20a, 20b), made up of an end portion of said bridge and/or said end pieces (102a, 102b) which is directly inserted and glued in a corresponding through slot or hole, one for each fixing point, like a fixing element integrated as an insert; said eyeglasses, characterised in that said bridge and said end pieces (102a, 102b) have holed end portions (106, 107), shaped with small teeth (109, 110, 111) and folded into the shape of a U in the terminal part like a bending wing, creating an improved fixing element which acts in the through slot as a spring insert with calibrated interference (104 - 105, 109, 202), it stabilizes the fixing and distributes the glue in a hollow space (116, L4) at its exterior (104 - 105, 201) and also at its interior (106 - 107, 117), in transverse continuity like a transverse blocking; said through slot, having a rectangular-type configuration with a width shorter than the height and with a joint as rounded corner (202, L4) between the internal walls; said fixing element, made up of a first wing and a second wing, having thin and uniform thickness, wherein said first wing is fixed being in continuity with said bridge or end piece (102a, 102b), while the second wing is bending being the terminal part folded into the shape of a U on said first wing being arranged spaced and parallel with respect to each other; said first and second wing (104, 105), with at least three small teeth symmetrically obtained from corresponding lowerings of the profile (110, F2), on both opposite edges of each wing (104, 105); and wherein said calibrated interference between said fixing element (100, 109) and the through slot occurs on said joint as rounded corner (202, L4), being progressive according to the thrust of said bending wing on the internal walls of said slot; said first and second wing (104, 105), with a tilted edge which acts as an entry slide to facilitate the introduction into said slot (100, 200), obtained with a lowering in correspondence with the fold; said first and second wing (104, 105), provided with respective through openings (106, 107) which are corresponding between each other once they are folded and superimposed (100, 108), suitable for forming a continuous hollow which can be crossed by the glue which is applied during the assembly so as to obtain, after its hardening, a single-body transverse locking element which is fastened by the heads to two opposite internal walls, in correspondence with a hollow space which is obtained from said calibrated interference (104, 105, 109, 202, L4); and wherein the overall depth of said fixing element is greater than the overall depth of the slot so that the loop of the fold protrudes from the lens (20a, 20b) frontally; said rimless eyeglasses, with said fixing element being two elements in number for each lens (101, 102a, 20a) (101, 102b, 20b), inserted and glued in corresponding through slots, which (100, 200) are shaped like a standardized fixing which can be adapted to differently shaped lenses (20a, 20b, L3) and frames. • a central bridge, suitable for connecting said lenses to each other and for supporting them in the correct position of use with spacing arms (112 - 113) and supporting nose pads; • two side end pieces (102a, 102b), suitable for connecting each lens to the corresponding side temple (103a, 103b) like a joint and base element for a hinge; • two side temples (103a, 103b) joined to the corresponding end pieces (102a, 102b) with a hinge constraint; • means for fixing the bridge and the end pieces (102a, 102b) to the lenses (20a, 20b), made up of an end portion of said bridge and/or said end pieces (102a, 102b) which is directly inserted and glued in a corresponding through slot or hole, one for each fixing point, like a fixing element integrated as an insert;