1. The present invention relates to an optical ocular system having imaging optics (16) that map an image generated in an object plane (9) such that a user can perceive the same in an image plane (15), wherein the imaging optics (16) comprise a first lens (10) having negative refractive power, and a deflection element (11) having positive refractive power, which is connected downstream of the first lens (10), effecting a folding of the optical path by means of a single reflection, wherein the first lens (10) and the object plane (9) form a first optical group (19), and a displacement unit (18) is provided, which can change the distance between the first optical group (19) and the displacement element (11) for the correction of spherical ametropia of the user.