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    By Vishal Arora, MD; Mathew Kurian, MD, MBBS; Rohit Shetty, FRCS
    AAO 2014
    Cataract/Anterior Segment

    While using the divide-and-conquer technique, when should you stop trenching and start cracking? This video demonstrates the Y sign, indicating the trenching endpoint, a sign that can ease nucleus disassembly and reduce the risk of complications. This technique exploits the morphological structure of the lens to gauge precisely the trench depth at which the surgeon can split even a soft nucleus into small wedges without instrument cheese-wiring.