Chang-Seibel Combination Chopper
for horizontal and vertical chopping

Katena presents a new combination chopper for soft to moderately dense nuclei. The double end instrument features the Seibel Vertical Safety Chopper tip on one end and the Chang MicroFinger Horizontal Chopper tip on the other end. The Seibel Chopper has a thin paddle shaped design with a beveled edge along the curved, posterior tip. The curved beveled edge ensures that any capsule contact will be distributed over a larger surface area, thereby reducing the chance for inadvertent capsule rupture. Once the nucleus is fractured, the broad flat sides of the paddle aid in safely completing the division down to the posterior plate. The Chang MicroFinger is used for horizontal chopping and features a "finger-shaped" tip with a defined inferior edge for nucleus division. By slipping the tip under the rhexis and hooking around the equator, the nucleus is divided horizontally as it is pulled centrally toward the Phaco probe. It is also ideal for sub-dividing mobile quadrants into smaller fragments.