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

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Abstract

Background

To compare safety and effectiveness between standard position and adjusted distance pre- and post-anterior capsule of femtosecond laser capsulotomy in white cataracts surgery.

Methods

Selected white cataracts that underwent LenSx femtosecond laser capsulotomy were randomized into groups A (standard position, with 300 µm symmetrically pre- and post-anterior capsule), B (increased distance with 400 µm symmetrically pre- and post-anterior capsule), and C (unsymmetrical distances of 200 µm pre- and 400 µm post-anterior capsule, respectively). All these surgeries were performed by the same experienced surgeon. Complications, including incomplete capsulotomy and capsule tears, were recorded. In addition, femtosecond capsulotomy and phacoemulsification parameters, IOLs centrality and corrected distance visual acuity were assessed.

Results

A total of 113 eyes were included in this study. There were 8 (21.6%) incomplete capsulotomy and 1 anterior capsule tear in group A. Meanwhile, only 2 eyes (5.1%) had incomplete capsulotomy with none showing capsule tear in group B. In group C, only 1 eye (2.7%) had incomplete capsulotomy and no capsule tear occurred. Mean femtosecond laser capsulotomy time was longer in group B compared with groups A and C. Average cumulative dispersed energy, IOL centrality and corrected distance visual acuity were similar in all groups.

Conclusions

Appropriate adjustment on femtosecond laser capsulotomy distance by reducing pre-anterior capsule and increasing post-anterior distance, may decrease incomplete capsulotomy and be more effective in white cataracts surgery.

Trial registration

Clinical trial registration number: ChiCTR2100043863.

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Funding

This study was supported by Chongqing Science and Health Union Medical Research Project (2021MSXM292) and Aier Eye Hospital Group Scientific Research Fund (AR2002D5).

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Authors and Affiliations

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

    Zeli Chen, Yan Wu, Yang Sun, Li Kong, Maosheng Chen & Zhen Liu

  2. West China School of Medicine, Sichuan University, Chengdu, Sichuan, China

    Yan Wu

  3. Department of Ophthalmology & Optometry of North Sichuan Medical College, Affiliated Hospital, North Sichuan Medical College, Nanchong, Sichuan, China

    Zhen Liu

Authors
  1. Zeli Chen
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  2. Yan Wu
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  3. Yang Sun
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  4. Li Kong
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  5. Maosheng Chen
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  6. Zhen Liu
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Corresponding author

Correspondence to Zhen Liu.

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Ethics approval

This study was approved by the Ethics Committee of Chongqing Aier (IRB2021001) and followed by Declaration of Helsinki. Informed consent was obtained from involved patients.

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The authors declare that they have no conflict of interest.

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Chen, Z., Wu, Y., Sun, Y. et al. Adjusted femtosecond laser capsulotomy distance in white cataracts to decrease incomplete capsulotomy: a randomized comparative cohort study. Graefes Arch Clin Exp Ophthalmol 260, 2591–2595 (2022). https://doi.org/10.1007/s00417-022-05630-9

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  • DOI: https://doi.org/10.1007/s00417-022-05630-9

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