Surgical Instruments Online Australia have a range of specialised Hooks, Trephines, Cystotomes and Keratomes for specific use in ophthalmology (eye) procedures. Ophthalmology hooks include strabismus hooks, iris hooks and positioning hooks are used to hold or grasp the muscle, iris or eyelid or used to insert or reposition the intraocular lens. Ophthalmology corneal trephines are used to circularly cut the cornea in corneal donation procedures. Ophthalmology cystotomes are used to puncture a hole or opening in the anterior capsule, nucleus dislocating or other intraocular applications. Ophthalmology keratomes are used to make sclerocorneal tunnels in cataract surgery as well as in other procedures to increase the size of an incision.