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.

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: A knife for ophthalmic surgery has a diamond blade (14) which protrudes at the forward end of a handle (11) through a slot in a footplate (16). The surface of the footplate which contracts the tissue (cornea or sclera, for example) to be incised has irregular castellations (28a, 28b, 28c, 28d, 28e, 28a′, 28b′, 28c′, 28d′, 28e′) forming irregular grooves (32a, 32b, 34a, 34b, 32a′, 32b′, 34a′, 34b′) therebetween. Alternatively or in addition, the contact surface has protruding pins (140) which engage the tissue (sclera, usually) to be incised.

Abstract: An ophthalmic injector for the insertion of segments of material into the eye comprises a barrel (11), a plunger (24) displaceable within the barrel, a nose (14) and a nose tip (16). A rotatable carousel-type holder (22) for the segments is mounted in the nose for stepwise indexing movement. The segments are pushed in turn from the holder by a centre rod (30) connected to the plunger, through the nose and along a guide channel in the nose tip. The nose (14) and the nose tip (16) are pivotable through 90° relative to the barrel. Alternatively, the segment holder can be a linearly movable holder, indexable transversely across and through the barrel. The holder can carry nine segments. The injector can be used for the insertion of segments used in the treatment of hyperopia.

Abstract: An instrument for the insertion of an intraocular lens into an eye comprises a body portion, e.g. a barrel, a nose portion having a lumen through which the lens passes, and a push rod connected to a plunger. Within the nose portion is an insert (30) which defines a passageway (40) therethrough. The passageway has a configuration which includes a smoothly continuous undulating surface (42, 44) upon which a lens rests. A cutout (52) accommodates the trailing haptic. For acrylic lenses, the undulating surface is preferably provided by a recess in the bottom of the passageway, the recess reducing in width and depth to define an upwardly sloping surface on which the lens is deposited.

Abstract: An instrument for the insertion of an intraocular lens into an eye comprises a body portion, a nose portion through which runs a passage for the lens to pass to a dispensing tip, and a plunger. The nose portion is pivotally connected to the body portion so that the barrel can be broken open for the placement of the lens into the nose portion. The lens is preferably placed on two spaced parallel nose pins to facilitate its folding. A cross pin preferably straddles the nose pins and under which the lens is arranged to pass, to prevent lifting and tilting of the lens.