Hinge as connecting part between a frame front of a pair of eyeglasses and its temples (2, 2') enabled to be folded and unfolded parallel to the frame front into the storage or the vision position of the eyeglasses, comprised of a front hinge part (4, 30), disposed in the terminal position on the frame front, and of a back hinge part (5, 37), disposed on the temples (2,2') at their front end, wherein in the back hinge part (5, 37) a spring-loaded or resilient spherical head anchor (10, 34) with a spherical head (23, 45) is disposed which is movably seated in a spherical head bearing (17, 33) of the front hinge part (4, 30), which at its end directed toward the temple (2, 2') comprises a slot-like recess (13, 31) at least partially penetrating the front hinge part (4, 30) as well as the spherical head bearing (17, 33), which recess is open in the direction toward the plane of symmetry of the eyeglasses as well as also in the direction of the longitudinal axis of the front hinge part (4, 30) toward the temple (2, 2') in order to enable in this manner the folding and unfolding of the temples (2, 2') from the storage into the vision position of the eyeglasses and conversely, characterized in a) that the diameter (d) of the spherical head bearing (17, 33) of the front hinge part (4, 30) is greater than the clear height (h) of the recess (13, 31) such that the spherical head bearing (17, 33) undercuts the recess (13, 31), b) t hat the spherical head (23, 45) of the spherical head anchor (10, 34) comprises two opposingly placed flattenings (24, 24') at a given spacing (z) from one another and the clear height (h) of the recess (13, 31) at its end directed toward the frame front is greater than the spacing (z) of the flattenings (24, 24') from one another, c) that the spherical head (23, 45) of the spherical head anchor (10, 34) is only enabled to pass with its flattenings (24, 24') the clear height (h) of the recess (13, 31), whereas the full diameter (q) of the spherical head (23, 45) is only enabled with the rotation of the spherical head anchor (10, 34) by 90 degrees about its longitudinal axis to engage fittingly into the spherical head bearing (17, 33) in order to be seated fittingly in it such that, after the introduction of the spherical head (23, 45) with its flattenings (24, 24') into the recess (13, 31), the temples (2, 2') are rotatable relative to the frame front by at least 90 degrees about the longitudinal axis of the spherical head anchor (10, 34) and herein the spherical head (23, 45) of the same comes to lie in the spherical head bearing (17, 33) such that it undercuts the recess (13, 31) and thus the temples (2, 2') can be removed from the front hinge part (4, 30) of the frame front in the reverse sequence of the motion. a) that the diameter (d) of the spherical head bearing (17, 33) of the front hinge part (4, 30) is greater than the clear height (h) of the recess (13, 31) such that the spherical head bearing (17, 33) undercuts the recess (13, 31), b) t hat the spherical head (23, 45) of the spherical head anchor (10, 34) comprises two opposingly placed flattenings (24, 24') at a given spacing (z) from one another and the clear height (h) of the recess (13, 31) at its end directed toward the frame front is greater than the spacing (z) of the flattenings (24, 24') from one another, c) that the spherical head (23, 45) of the spherical head anchor (10, 34) is only enabled to pass with its flattenings (24, 24') the clear height (h) of the recess (13, 31), whereas the full diameter (q) of the spherical head (23, 45) is only enabled with the rotation of the spherical head anchor (10, 34) by 90 degrees about its longitudinal axis to engage fittingly into the spherical head bearing (17, 33) in order to be seated fittingly in it such that, after the introduction of the spherical head (23, 45) with its flattenings (24, 24') into the recess (13, 31), the temples (2, 2') are rotatable relative to the frame front by at least 90 degrees about the longitudinal axis of the spherical head anchor (10, 34) and herein the spherical head (23, 45) of the same comes to lie in the spherical head bearing (17, 33) such that it undercuts the recess (13, 31) and thus the temples (2, 2') can be removed from the front hinge part (4, 30) of the frame front in the reverse sequence of the motion.