Abstract: The invention relates to a support element to compensate for deformations of the cornea H of an eye, having an annular support body 2 in one or more pieces, which makes it possible to compensate for keratoconus with minimised stress on the cornea of the eye being treated. This is achieved according to the invention in that the support body 2 has a cross section which is flattened on one side and otherwise rounded, so that a circumferential front-side flattening 6 is formed on it.

Abstract: Device for cutting a curved channel into the cornea (105) of an eye, with a holding means (301, 302) that can be applied to the cornea (105) in a radial direction defined by the radius of curvature of the cornea (105), and with a cutting means (303) that has a curved blade (303.3) for cutting the curved channel, wherein the holding means (301, 302) has a guide means (301.2) with which the blade (303.3) for cutting the channel is guided in a plane extending transversely with respect to the radial direction, and wherein the holding means (301, 302) is designed to define the position of the blade (303.3) in the radial direction during the cutting of the channel.

Abstract: A local deformation of the cornea of an eye can be compensated by a set comprising at least two implant members for insertion into at least one receptacle inserted into the cornea, wherein at least two implant members are arranged in differing planes located one above the other. Undesirable repercussions and side effects of the intervention in the eye can be detected as early as the simulation takes place and suitable receptacles and the like can be accordingly selected in order to minimise such repercussions and side effects and, at the same time, to provide optimum compensation for the deformation of the cornea in order to compensate for the deformation.

Abstract: Organs of the eye which are situated in the region of the anterior chamber of the eye are protected during eye lens surgery by a device in which a surgical instrument, such as a tip of a phacoprobe, is guided to the posterior chamber of the eye through a tunnel placed in the cornea/sclera region into the anterior chamber. In order to particularly protect the iris of the eye, a push-in part is provided and can be pushed through the tunnel into the anterior chamber at a push-in length which covers the iris at least partially in the radial direction. The push-in part is connected with a holding part which can be supported outside the tunnel on the exterior surface of the eye. An area which extends in the tunnel and is used for thermal control has a smaller width than an area which projects into the anterior chamber.