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Related Experiment Video

Updated: Feb 28, 2026

Anterior Capsular Reconstruction with Human Dermal Allograft for Irreparable Subscapularis Tears
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New capsular tension segment with 2-point fixation for zonular weakness.

Malkit K Singh1, Balamurali K Ambati1, Alan S Crandall1

  • 1From the John A. Moran Eye Center, University of Utah, Salt Lake City, Utah, USA.

Journal of Cataract and Refractive Surgery
|June 13, 2017
PubMed
Summary

A novel capsular tension segment (CTS) offers improved stress distribution during cataract surgery. This new device may reduce complications like capsulorhexis peaking and anterior capsule tears, enhancing surgical outcomes.

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Area of Science:

  • Ophthalmology
  • Surgical Innovation
  • Cataract Surgery

Background:

  • Cataract surgery requires stable capsular support, especially in cases of zonular weakness.
  • Existing capsular tension devices may concentrate stress, leading to complications.
  • Anterior capsule tears and capsulorhexis issues can compromise surgical success.

Purpose of the Study:

  • To introduce and evaluate a new capsular tension segment (CTS) design.
  • To describe the clinical applications and surgical techniques for the Ambati CTS.
  • To assess the potential of the Ambati CTS in managing complex cataract cases.

Main Methods:

  • Description of the Ambati CTS, featuring closely spaced eyelets for dual-point tension distribution.
  • Presentation of two distinct surgical techniques for CTS implantation.
  • Case series detailing the use of the Ambati CTS in four patients.

Main Results:

  • The Ambati CTS effectively distributes tension, mitigating stress on the anterior capsulotomy.
  • The device demonstrated potential in preventing capsulorhexis peaking and anterior capsule tears.
  • Successful implantation was achieved in an adult with traumatic zonular weakness and three children with Marfan syndrome.

Conclusions:

  • The Ambati CTS represents a promising advancement in managing capsular instability during cataract surgery.
  • Its unique design offers enhanced safety and efficacy in preventing common surgical complications.
  • The device shows potential for providing four-point fixation in cases of severe zonular compromise.