Performing surgery on a 21 year old with a mature white cataract requires a different mindset than your typical elderly patient because there is absolutely no nuclear sclerosis. In this case, once the initial needle puncture is made to aspirate the milky cortex and reduce intralenticular pressure, the entire lens material can often be evacuated through that single opening. Because the lens is completely liquefied and soft, you are essentially left with an empty and floppy capsular bag. The most critical step here is to completely fill the capsular bag with viscoelastic before attempting the capsulorhexis. Without this internal support, the capsule will lack the necessary tension for a controlled tear, leading to a high risk of peripheral extension. By reinflating the bag, you create a stable surface that allows you to guide the micro-forceps with precision. This ensures a centered and circular opening, providing stability for the new intraocular lens in an eye that still has many decades of vision ahead.
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