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Related Experiment Video

Updated: Sep 28, 2025

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Adjusted femtosecond laser capsulotomy distance in white cataracts to decrease incomplete capsulotomy: a randomized

Zeli Chen1, Yan Wu1,2, Yang Sun1

  • 1Chongqing Aier Eye Hospital, No. 2, Huatang Road, Chongqing, China.

Graefe'S Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie
|March 28, 2022
PubMed
Summary
This summary is machine-generated.

Adjusting femtosecond laser capsulotomy distance in white cataracts surgery, specifically reducing pre-capsular and increasing post-capsular distance, significantly decreases incomplete capsulotomies and enhances safety and effectiveness.

Keywords:
Femtosecond laser; Cataracts; Adjusted capsulotomy distance

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Area of Science:

  • Ophthalmology
  • Laser Surgery
  • Cataract Surgery

Background:

  • Femtosecond laser-assisted cataract surgery (FLACS) is a common procedure.
  • Optimizing parameters for FLACS in white cataracts is crucial for patient outcomes.
  • Standard and adjusted distances for anterior capsule capsulotomy require comparative analysis.

Purpose of the Study:

  • To compare the safety and effectiveness of standard versus adjusted anterior capsule distances during femtosecond laser capsulotomy in white cataracts surgery.
  • To evaluate the impact of different pre- and post-anterior capsule distances on complication rates and surgical outcomes.

Main Methods:

  • A randomized controlled trial involving 113 eyes with white cataracts undergoing LenSx femtosecond laser capsulotomy.
  • Three groups were established: standard symmetric distance (300 µm), increased symmetric distance (400 µm), and unsymmetrical distance (200 µm pre, 400 µm post).
  • Complications (incomplete capsulotomy, capsule tears), laser parameters, IOL centrality, and visual acuity were assessed.

Main Results:

  • Group A (standard) had 21.6% incomplete capsulotomy and 1 capsule tear.
  • Group B (increased distance) showed a significant reduction to 5.1% incomplete capsulotomy with no tears.
  • Group C (unsymmetrical) had 2.7% incomplete capsulotomy and no tears; laser time was longer in Group B.

Conclusions:

  • Adjusting femtosecond laser capsulotomy distance, particularly reducing pre-capsular and increasing post-capsular distance, effectively decreases incomplete capsulotomies in white cataracts.
  • This parameter adjustment enhances the safety and effectiveness of femtosecond laser capsulotomy in challenging white cataracts.
  • The findings suggest a refined approach to FLACS parameter optimization for improved surgical outcomes.