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Related Experiment Video

Updated: Jun 4, 2025

Iris Fixation via External Pentagram Suturing

Iris Fixation via External Pentagram Suturing

Published on: May 5, 2022

Trifold technique for pupil reconstruction in large non-appositional iris defects.

Dhivya Ashok Kumar¹, Amar Agarwal, Soosan Jacob

¹Department of Uvea, Cataract and Cornea, Dr. Agarwal Eye Hospital and Eye Research Centre, Chennai, Tamil Nadu, India.

Indian Journal of Ophthalmology

|December 26, 2024

Summary

Closing large iris defects is simplified using a novel trifold technique. This method combines trocar-assisted iris repair and single-pass four-throw pupilloplasty, reducing tissue strain and complications.

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Area of Science:

Ophthalmology
Surgical Techniques

Background:

Large iris defects present significant surgical challenges due to tissue scarcity and opposing forces.
Existing methods may result in excessive traction or tethering of the iris tissue.

Purpose of the Study:

To introduce and evaluate the trifold technique for closing large, non-appositional iris defects.
To assess the efficacy of this combined approach in minimizing tractional forces and complications.

Main Methods:

The trifold technique combines trocar-assisted iris repair with single-pass four-throw (SFT) pupilloplasty.
Trocar sutures are used initially to oppose iris ends, followed by SFT to seal the defect.

Main Results:

The combined procedure effectively closes large iris defects.
This technique results in less manipulative intervention compared to other methods.
No complications involving the iris or pupil diaphragm were observed.

Conclusions:

The trifold technique offers a viable solution for large iris defect closure.
It effectively reduces tractional forces and tethering, preserving iris and pupil function.