Closed chamber manual phacofragmentation in manual small-incision cataract surgery.

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Abstract

Manual small-incision cataract surgery (MSICS) has existed as an alternative to conventional phacoemulsification since its inception. The size of the incision has been becoming smaller in MSICS to reduce the surgically induced astigmatism. Smaller incisions go hand in hand with nucleus debulking and fragmenting techniques which have been practiced over almost four decades. Such techniques have a learning curve and require meticulous execution. The authors describe a technique to achieve nucleus bisection or trisection or debulking in a closed anterior chamber. This technique has been in use for a long time; it has shown excellent results and has a shorter learning curve. Since it is done in a closed chamber, the risk to the corneal endothelium is minimized as the anterior chamber remains deep throughout the procedure. Sudden escape of the viscoelastic and shallowing of the chamber are prevented, and the corneal endothelium is well protected. It uses iris as support and reference. The specially designed chopper is an inexpensive addition to the instruments. Fragmentation is achieved in the proximal half of the chamber where control over instruments is maximum. Pristine clear cornea on day 1 is the rule rather than the exception with this technique. This is a safe and repeatable technique for phacofragmentation in cataract extraction.