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Updated: May 9, 2026

Surgical Correction for Pediatric Epiblepharon and Trichiasis

Surgical Correction for Pediatric Epiblepharon and Trichiasis

Published on: July 8, 2025

New adjustable suture technique for trabeculectomy.

Vespasiano Rebouças-Santos¹, Daniel Meira-Freitas, Angelino Júlio Cariello

¹Department of Ophthalmology, Universidade Federal de São Paulo - UNIFESP - São Paulo (SP) - Brazil. santosvespasiano@hotmail.com

Arquivos Brasileiros De Oftalmologia

|August 10, 2013

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This study introduces an adjustable suture (AS) model for trabeculectomy, allowing noninvasive postoperative adjustments to suture tension. The AS model effectively managed intraocular pressure, offering both reduction and elevation capabilities.

Area of Science:

Ophthalmology
Surgical Innovation
Glaucoma Surgery

Background:

Trabeculectomy is a common glaucoma surgery.
Suture tension is critical for managing intraocular pressure post-trabeculectomy.
Current methods for adjusting suture tension are limited.

Purpose of the Study:

To describe a novel adjustable suture (AS) experimental model for trabeculectomy.
To evaluate the AS model's ability to allow tightening, loosening, and retightening of suture tension.
To compare the AS model with conventional sutures in managing intraocular pressure.

Main Methods:

Trabeculectomy was performed on 15 pig eyes.
Each eye underwent testing with both conventional sutures and the AS model.

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Last Updated: May 9, 2026

Surgical Correction for Pediatric Epiblepharon and Trichiasis

Surgical Correction for Pediatric Epiblepharon and Trichiasis

Published on: July 8, 2025

Intraocular pressure was measured at three key time points: initial tightening, post-loosening/removal, and post-retightening/waiting period.

Main Results:

Initial intraocular pressure was similar between the conventional and AS groups.
Significant differences in intraocular pressure were observed at T2 and T3.
The AS model allowed for both reduction and elevation of intraocular pressure, unlike the conventional method.

Conclusions:

The developed adjustable suture model offers an effective noninvasive method for postoperative suture tension adjustment.
This innovation provides greater control over intraocular pressure following trabeculectomy.
The AS model represents a significant advancement in glaucoma surgical techniques.