3090: submarine chop for a denser cataract

Executing the “submarine chop” on a dense nuclear cataract begins with sculpting a central pit directly into the nucleus using the phaco tip. Digging this central depression allows the phaco needle to achieve deep mechanical purchase within the firm core while simultaneously creating physical space for the chopper instrument to submerge beneath the anterior lens surface. Embedding the chopper deep into the core behind the phaco tip generates leverage to apply direct vector forces across the entire thickness of the hard lens. This deep mechanical purchase splits dense, leathery nuclear fibers completely through to the posterior epinucleus, avoiding incomplete, superficial propagation and preventing unnecessary zonular traction. Watch the video to see how creating a central pit enables deep submarine chopping forces to divide a dense nucleus safely. What nuclear disassembly technique do you prefer when encountering a rock-hard grade five brown cataract—submarine chop, classic direct chop, or multi-trench divide and conquer? Please comment your thoughts below.

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