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Mini-rhexis for white intumescent cataracts.

Newton Kara-Junior1, Marcony Rodrigues de Santhiago, Andrea Kawakami

  • 1Ophthalmology Department, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.

Clinics (Sao Paulo, Brazil)
|June 3, 2009
PubMed
Summary

Two-stage capsulorhexis is safer for intumescent white cataracts, reducing complications like radial tears. This technique offers a more secure approach to cataract surgery compared to the traditional one-stage method.

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Area of Science:

  • Ophthalmology
  • Surgical Techniques
  • Cataract Surgery

Background:

  • Intumescent white cataracts present unique surgical challenges due to high intracapsular pressure.
  • Traditional one-stage continuous curvilinear capsulorhexis (CCC) may lead to intraoperative complications in these cases.

Purpose of the Study:

  • To compare the intraoperative safety of one-stage versus two-stage capsulorhexis for intumescent white cataracts.

Main Methods:

  • A prospective randomized study compared one-stage CCC (1-CCC) with two-stage CCC (2-CCC).
  • Patients were stratified into three cataract subsets (Type 1, 2, 3) based on echographic characteristics.
  • Intracapsular pressure and capsulorhexis-related complications were assessed.

Main Results:

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  • The one-stage technique resulted in significant leakage (46.15%), high intracapsular pressure (61.53%), anterior capsule tears (23.07%), and capsulorhexis discontinuity (30.79%).
  • The two-stage technique showed similar leakage (45.45%) but lower perceived high intracapsular pressure (36.36%) and no anterior capsule tears or capsulorhexis discontinuity.
  • Leakage was higher in type 2 cataracts compared to types 1 and 3.

Conclusions:

  • Two-stage capsulorhexis effectively prevents radial tears and other complications associated with high intracapsular pressure in white cataracts.
  • This technique enhances safety during cataract surgery for challenging intumescent cases.
  • Ultrasonography findings supported the safety benefits of the two-stage approach.