Abstract: The present invention relates to apparatus for radial ketatotomy. A support (1), having a reference surface (3) adapted to fit the cornea (2a) of an eye (2) and in which opens slits (19) disposed in planes including an axis (4) adapted to coincide with the optical axis (105), carries blades (22) of which each is associated with a respective slit (19), and means for simultaneously moving the assembly of blades (22) for a movement in the associated slits (19) towards or away from the axis (4); the blades (22), projecting with respect to the reference surface (3), then simultaneously cut the cornea (2a), advantageously pressed pneumatically against the reference surface (3). The simultaneous making of all the incisions is rapid, and the blades work in identical conditions so the incisions have reproducible geometric characteristics and the risks of perforation of the cornea are reduced.

Abstract: An intra-ocular implant constituted by a lens provided with loops for fixation extending substantially radially outside the lens. According to one of the features of the invention, at least one of the front loops is constituted by two wires curved towards each other and terminated by sharp points which overlap in rest position.

Abstract: The present invention concerns a trephine for making at least one circular incision on the cornea of an eye. The trephine comprises an external support forming a casing and having a base portion for applying it to the eye, an internal blade carrier which is movable in the support, and a drive mechanism for driving the blade carrier with respect to the support. The blade carrier is driven by the drive mechanism which causes it to screw into and out of the support and the blade is cylindrical, the cutting blade portion being formed by its lower circular edge.