Certified Instrument Specialist (CIS) Practice Exam 2025 - Free CIS Practice Questions and Study Guide

Iris scissors are specifically designed for delicate surgical procedures, particularly in ophthalmic surgery where precision is critical. Their slender and finely pointed blades allow for careful dissection and the removal of dead tissue in sensitive areas, such as around the eye. This design minimizes trauma to the surrounding tissue while providing the surgeon with the control necessary to perform intricate maneuvers.

In contrast, the other instruments listed are not as suitable for this specialized task. Babcock forceps, while useful for grasping tissue, provide a broader grasp and are typically used in more robust tissue manipulation rather than the delicate work required around the eye. Ochsner (Kocher) forceps are suited for clamping larger tissues or vessels due to their strong grip but are too aggressive for the fine work needed in ophthalmic procedures. Mosquito forceps are also designed for clamping smaller blood vessels but lack the precision and design features required for delicate tissue dissection, making them less appropriate for removing dead tissue from areas like the eye.