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Published in: Graefe's Archive for Clinical and Experimental Ophthalmology 9/2023

27-04-2023 | Glaucoma | Glaucoma

Early postoperative visual acuity changes after trabeculectomy and factors affecting visual acuity

Authors: Nobuyuki Sato, Masayuki Kasahara, Yusuke Kono, Kazunori Hirasawa, Nobuyuki Shoji

Published in: Graefe's Archive for Clinical and Experimental Ophthalmology | Issue 9/2023

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Abstract

Purpose

To investigate the early visual acuity (VA) changes that occur after trabeculectomy and their reversal with recovery.

Method

Two hundred ninety-two eyes of 292 patients after initial trabeculectomy as a standalone procedure fulfilling the following conditions were included: 1) patients with a postoperative follow-up of at least 3 months; 2) patients with preoperative corrected VA less than 0.5 logMAR equivalent; 3) patients with reliable results of visual field; and 4) patients who had open angle glaucoma. VA and intraocular pressure (IOP) changes during the first 3 months after surgery and factors affecting VA postoperatively at 3 months were investigated.

Results

The mean IOPs (mmHg) after trabeculectomy were significantly lower than preoperatively during the entire period (P < 0.0001). The mean corrected VA for all patients was 0.06 ± 0.17, 0.24 ± 0.38, 0.19 ± 0.26, and 0.14 ± 0.27 preoperatively and at 1 week, 1 month, and 3 months postoperatively, respectively, showing a significant decrease from the preoperative period at all time points (P < 0.0001). VA loss of two or more levels was observed in 13 eyes (4.45%) at 3 months postoperatively. Foveal threshold (FT), shallow anterior chamber (SAC), and choroidal detachment (CD) affected the change in VA before and at 3 months after surgery (P < 0.0001, P = 0.0002, P = 0.0004, respectively). The factors that had significant effects on VA change were FT, SAC, and CD in POAG, FT and hypotonic maculopathy in NTG, and FT in XFG (p < 0.05).

Conclusion

The frequency of serious vision loss was 4.45% for two or more levels of vision loss, and early postoperative VA changes after trabeculectomy may not be reversed even 3 months later. VA loss is influenced by preoperative FT, postoperative SAC and CD, but the impact of postoperative complications vary with disease type.
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Metadata
Title
Early postoperative visual acuity changes after trabeculectomy and factors affecting visual acuity
Authors
Nobuyuki Sato
Masayuki Kasahara
Yusuke Kono
Kazunori Hirasawa
Nobuyuki Shoji
Publication date
27-04-2023
Publisher
Springer Berlin Heidelberg
Published in
Graefe's Archive for Clinical and Experimental Ophthalmology / Issue 9/2023
Print ISSN: 0721-832X
Electronic ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-023-06076-3

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