Comparison of energy required for phaco-chop and divide and conquer phacoemulsification

J Cataract Refract Surg. 1998 May;24(5):689-92. doi: 10.1016/s0886-3350(98)80267-8.


Purpose: To evaluate the safety and usefulness of phaco-chop cataract extraction.

Setting: A university-associated, multispecialty ophthalmology practice.

Methods: Fifty-three patients in a university-associated ophthalmology practice had cataract extraction, 32 by the phaco-chop technique and 21 by four-quadrant divide and conquer phacoemulsification. Phacoemulsification energy and complication rates were compared.

Results: Mean phacoemulsification energy was significantly lower in the phaco-chop group (mean 782 J +/- 446 [SD]) than in the divide and conquer group (mean 3264 +/- 1218 J)(P < .00001). No complications occurred in either group.

Conclusion: The phaco-chop technique provided safe, effective cataract extraction with significantly less energy than that required for divide and conquer phacoemulsification.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Humans
  • Intraoperative Complications
  • Lens Implantation, Intraocular
  • Phacoemulsification / methods*
  • Postoperative Complications
  • Prospective Studies
  • Safety