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Anterior Segment Optical Coherence Tomography for Targeted Transconjunctival Suture Placement in Overfiltering Trabeculectomy Blebs

Heisler, Morgan BASc*; Quong, Whitney L. MD; Lee, Sieun PhD*; Han, Sherry MEng; Beg, Mirza F. PhD*; Sarunic, Marinko V. PhD*; Mackenzie, Paul J. PhD, MD§

doi: 10.1097/IJG.0000000000000656
Case Report

Purpose: To demonstrate the utility of swept-source anterior segment optical coherence tomography (SS-AS-OCT) in guiding placement of transconjunctival sutures in hypotonous patients after a trabeculectomy.

Patients and Methods: This is a longitudinal case series of 10 eyes from 10 patients who required transconjunctival sutures after a trabeculectomy. SS-AS-OCT was used to aid in the placement of the sutures to improve the function of the overfiltering bleb.

Results: SS-AS-OCT reliably identified localized areas of overfiltering, allowing for targeted suture placement in 8 eyes. The 2 eyes in which localized areas of overfiltering were not found required further surgical intervention.

Conclusions: SS-AS-OCT enhances transconjunctival suturing for overfiltering blebs when focal fluid accumulation is visualized.

*School of Engineering Science, Simon Fraser University, Burnaby

Faculty of Medicine

Faculty of Applied Science

§Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, BC, Canada

Disclosure: The authors declare no conflict of interest.

Reprints: Paul J. Mackenzie, PhD, MD, Eye Care Centre, Section D, 2550 Willow Street, Vancouver, BC, Canada V5Z 3N9 (e-mail:

Received October 13, 2016

Accepted January 30, 2017

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