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Ophthalmology and Visual Sciences

Phaco Chop


  • Describe various techniques for nucleus disassembly:
    • Stop and Chop
    • Quick Chop
  • Demonstrate Phaco chop using Kitaro and/or Phillips eye models


  • Henderson BA. Essentials of Cataract Surgery, second edition. Thorofare, NJ: Slack Inc., 2014. (WW 260 E78 2014). isbn 978-1-61711-0672
    • Chapter 14, Phaco Chop Techniques, pages 135-148
      (UIHC Link)
  • Kim, Terry. Curbside Consultation in Cataract Surgery: 49 Clinical Questions, second edition. Thorofare, NJ: Slack Inc., 2014
    • Question 26: I usually perform Divide-and-Conquer Phacoemulsification. How can I incorporate Chopping into my Technique



Learning phaco chop step by step
Watch on YouTube


Stop n chop some teaching points
Watch on YouTube


First phaco chop
Watch on YouTube


Nice chop
Watch on YouTube


Soft chop
Watch on YouTube


Channel chop (as a transition to phaco chop)
Watch on YouTube


Paracentesis placement for siebel chopper
Watch on YouTube


Vertical Chop Dense Lens
Watch on YouTube


Horizontal soft chop
Watch on YouTube

Chopping complications


Chopper tear
Watch on YouTube


Chopper incident
Watch on YouTube

Whole Cases

Great third year case – using phaco chop
Watch on YouTube


Routine phaco chop
Watch on YouTube


Phaco chop simulation
Watch on YouTube


Phaco Machine


Hydrodissection cannula


Side port

Viscoelastic, 27g cannula



There are modules that are to train for phaco chop.

Suggested citation format: Haugsdal J, Kitzmann A, Oetting TA. The Iowa Ophthalmology Wet Laboratory. Updated Posting June 28, 2021. Originally Posted December 6, 2012. Available from

last updated: 07/01/2021