Koch-Nagahara Spatula / Chopper
Also called Koch Chopper
- Length
- 4¼ in
- Setup
- 1
Double-ended eye instrument on a round knurled handle. One end is a flat, angled spatula (Koch); the other is a fine shaft bent at a right angle into a small chopping tip (Nagahara).
Primary uses
What this instrument is on the table to do.
Second instrument used through the side-port (paracentesis) incision in phacoemulsification to rotate the lens and split (chop) the nucleus into pieces.
Sizes & variants
The lengths, angles and patterns it comes in.
Nagahara choppers come single- or double-ended, in steel or titanium (Sontec). Nagahara spatula, angled with a flat inner edge, about 4¼ in (Aesculap).
There is more on this card
The photos, the description, the uses and the sizes are free for everyone. The 3D model, the parts that only come from years at the table, and the testing that gets you ready for the CST are Pro. See what is included
Know this one cold. Then the other 2,881.
You are reading the free half of this card. Pro opens what only comes from years at the table, and turns all 2,882 of them into something you get tested on until you are quick.
- Cautions, inspection checks, how to pass it, and every operation it is laid out for
- Every setup this instrument is laid out on, with photos of each table
- Flashcards that bring it back right before you would forget it
- Practice tests and timed exams over all 259 setups
Cancel anytime · One account, web and apps

Add your photos & notes
Submissions stay private and are reviewed by our team. An accepted photo joins this instrument's gallery with your credit.