Surgical, medical and veterinary instruments and apparatus, particularly injection instruments for intraocular lenses, and cartridges and pistons for injection instruments for intraocular lenses; intraocular lenses; injection instruments for ocular implants, and cartridges and pistons for injection instruments for ocular implants; intraocular artificial corneas and intraocular lenses; rinsing instruments and suction instruments for use in eye surgeries; cannulas and micro-cannulas, particular...