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12.09.2018 | Glaucoma

Relationship between filtering bleb vascularization and surgical outcomes after trabeculectomy: an optical coherence tomography angiography study

Zeitschrift:
Graefe's Archive for Clinical and Experimental Ophthalmology
Autoren:
Xue Yin, Qinhua Cai, Run Song, Xuefei He, Peirong Lu

Abstract

Purpose

To explore the relationship between the bleb vasculature and surgical outcome after trabeculectomy (TRAB) using optical coherence tomography angiography (OCT-A).

Methods

A prospective study was conducted, which included 26 eyes of 26 primary glaucoma patients in the final analysis. Thereinto, six patients underwent TRAB combined 5-FU and 12 patients received subconjunctival 5-FU injection postoperation. The bleb vessel was evaluated using OCT-A 1 week, 2 weeks, 1 month, 3 months, and 6 months after TRAB. Intraocular pressure (IOP), filtering bleb height, and bleb wall thickness were recorded at the same time. Pearson’s correlation analysis and linear regression analysis were performed to determine the correlation of the vessel area data with other parameters.

Results

Compared with vessel area 1 week after surgery, there was significant increase of the vessel area (△vessel area) 2 weeks (11.13 ± 11.91%, p < 0.05) and 1 month (16.91 ± 14.85%, p < 0.0001) after surgery in all patients. The △vessel area was significantly greater in acute angle closure (AAC) and primary angle closure glaucoma (PACG) 1-month post-TRAB as compared with that 1 week (p < 0.05). The results indicated that the △vessel area 1-month post-TRAB was positive correlated with IOP 6-month post-TRAB (β = 3.88, p = 0.042).

Conclusions

Filtering bleb vascularization evaluation using OCT-A could potentially predict IOP 6-month post-TRAB. Surgery effect predicted by filtering bleb vascularization detection is conducive to the select specific postoperative intervention to improve the success rate of TRAB.

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Literatur
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