Abstract: A tissue barrier (410), for example of titanium alloy, for insertion into an incision in the sclera of the eye for the treatment of conditions such as presbyopia, comprises an elongate insert which is provided with a longitudinally extending flange (414, 416) at each end to prevent the barrier from being ejected from the incision. Each flange (414, 416) is preferably about half the height of the central portion (412) of the insert. Preferably, the flanges are of unequal length. The flanges may be circular or rectangular in cross-section. The central portion (412) may be thicker than the flanges transversely to the longitudinal axis of the insert. The outer ends of the flanges may be chamfered (418).

Abstract: An instrument (110) for rolling a thin ophthalmic lens and inserting the rolled lens into the eye comprises a body (112) in which a plunger (124) is slidable. A thin lens (156) is placed on a lens roller (130) which is slidable transversely of the instrument. The lens is rolled during the sliding movement into a tubular configuration. The rolled lens is then positioned in the instrument in a cylindrical cavity and ready for contact by a push-rod of the plunger (124) so that it is delivered from the instrument through a box in a tip portion (114) of the instrument.