Changes in anterior segment parameters following insertion of ExPRESS mini glaucoma implant vs. trabeculectomy.

Abstract

PURPOSE:

To compare changes in anterior segment parameters following ExPRESS Mini Glaucoma Shunt surgery vs. trabeculectomy using the Pentacam rotating Scheimpflug camera.

METHODS:

In this prospective, comparative study, 27 patients with glaucoma treated at the Rabin Medical Center from 2009 to 2013 were enrolled in this prospective comparative study: 19 participants (19 eyes) underwent ExPRESS shunt implantation and 12 (13 eyes) underwent trabeculectomy. Changes in anterior chamber parameters at postoperative day 1 and postoperative month 3 were evaluated on Scheimpflug images.

RESULTS:

Intraocular pressure decreased significantly from baseline in both groups. The decrease in both groups was similar at postoperative month 3 (p=0.82). ExPRESS surgery caused a transient increase in posterior corneal astigmatism (p=0.008) and a transient decrease in anterior chamber depth (p=0.016) and volume (p=0.006) on postoperative day 1. At postoperative month 3, these parameters were no longer statistically significant (p=0.65, p=0.51, and p=0.57 respectively). Trabeculectomy caused a transient increase in anterior and posterior corneal astigmatism on postoperative day 1 (p=0.003 and p=0.005, respectively), which were not evident at postoperative month 3 (p=1.0 and p=1.0, respectively). At postoperative month 3, both ExPRESS and trabeculectomy showed similar changes in anterior chamber parameters.

CONCLUSIONS:

Both ExPRESS mini glaucoma implant and trabeculectomy significantly decreased intraocular pressure and had transient effects on anterior segment parameters, with minor differences between the methods.

• Authors: Eitan Livny, Na'ama Hammel, Michael Mimouni, Moshe Lusky, Igor Kaiserman, Irit Bahar
• Journal: Arquivos brasileiros de oftalmologia (Arq Bras Oftalmol) Vol. 83 Issue 4 Pg. 283-288 (08 2020) ISSN: 1678-2925 [Electronic] Brazil
• PMID: 32756788 (Publication Type: Journal Article)

Topics

• Glaucoma (surgery)
• Humans
• Intraocular Pressure
• Postoperative Complications
• Prospective Studies
• Tonometry, Ocular
• Trabeculectomy (adverse effects)