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Susan MacDonald, MD
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Phaco chop is an advanced technique that requires the surgeon to possess a solid understanding of fluidics and power modulation. When chopping, he or she uses the phaco tip to grab and hold the nucleus. The “grab” is accomplished by the phaco needle's being impaled into the nucleus. The surgeon buries the phaco needle with a quick burst of energy. Next, moving the foot pedal to foot position 2 allows occlusion of the needle and causes vacuum to build. The vacuum will allow the surgeon to hold the nucleus and resist the movement of the chopper.
Posted: 12/04/2013
Susan MacDonald, MD
Phaco chop is an advanced technique that requires the surgeon to possess a solid understanding of fluidics and power modulation. When chopping, he or she uses the phaco tip to grab and hold the nucleus. The “grab” is accomplished by the phaco needle's being impaled into the nucleus. The surgeon buries the phaco needle with a quick burst of energy. Next, moving the foot pedal to foot position 2 allows occlusion of the needle and causes vacuum to build. The vacuum will allow the surgeon to hold the nucleus and resist the movement of the chopper.
Posted: 12/04/2013
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Just Now
H G
11 years ago
In almost every phaco chop technique, the surgeon rotate the hand piece so the phaco is easily ocluded for fracture, chop and emulsify nucleus fragments... but as we see in this video, one of the irrigation holes of handpiece is directly in front of endotelium (increasing the visco washout leaving an unprotected endotelium). Would not be wiser to rotate the phaco sleeve for phaco techniques, so the holes stay in horizontal position during almost all surgery time?
ari weitzner
11 years ago
this is chang's vertical chop. he uses a sharper chopper for denser nuclei. its a nice technoque