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Ophthalmology and Visual Sciences

Capsule Support Devices


  • Describe indications for placing capsule support devices
  • Describe/Demonstrate placement of capsule tension ring (CTR)
    • Early placement
    • Late placement
  • Describe when to use a right vs a left CTR
  • Describe/Demonstrate placement of capsular hooks


  • Henderson BA. Essentials of Cataract Surgery, second edition. Thorofare, NJ: Slack Inc., 2014. (WW 260 E78 2014). isbn 978-1-61711-0672
    • Chapter 24: Zonular Instability and Endocapsular Tension Rings
      (UIHC Link)
  • • Kim, Terry. Curbside Consultation in Cataract Surgery: 49 Clinical Questions, second edition. Thorofare, NJ: Slack Inc., 2014
    • Question 32: The Capsular bad is unexpectedly mobil during phaco. When should I implant a capsular tension ring and which size should I use?


Retractors/Capsular tension hooks:

MiLoop and MST retractors
Watch on YouTube


Capsule retractors and other stuff
Watch on YouTube


Sinsky and iris hook assist
Watch on YouTube


So many paracenteses
Watch on YouTube


MST capsule retractors
Watch on YouTube


Early CTR with soft prolapse for zonular dialysis
Watch on YouTube


Sinsky hook for CTR placement
Watch on YouTube


CTR toward the weak area
Watch on YouTube


Early capsular tension ring and iridodialysis repair
Watch on YouTube


Tricky CTR insertion
Watch on YouTube


CTR load and insert
Watch on YouTube


Many accessories
Watch on YouTube



MST retractor simulation
Watch on YouTube


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