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Case Reports
. 2023 Nov 27:32:101967.
doi: 10.1016/j.ajoc.2023.101967. eCollection 2023 Dec.

Case report: Surgical management of vitreous obstruction following PreserFlo ® MicroShunt implantation

Giovanni Tondini  1 , Giovanni Staurenghi  1 , Sara Bochicchio  1 , Angelica Dipinto  1 , Matteo Giuseppe Cereda  1 , De Angelis Stefano  1
Affiliations
Case Reports

Case report: Surgical management of vitreous obstruction following PreserFlo ® MicroShunt implantation

Giovanni Tondini et al. Am J Ophthalmol Case Rep. .

Abstract

Purpose: To describe a clinical case of lumen obstruction a few days after implantation of the PreserFlo® Microshunt which has been resolved by anterior vitrectomy.

Observation: A 76-year-old patient with advanced and progressing primary open-angle glaucoma (POAG) presented ten days after PreserFlo® Microshunt implantation in his left eye with an intraocular pressure (IOP) of 24 mmHg because of vitreous obstruction. Anterior vitrectomy with 25 Gauge vitrector was performed to remove the vitreous using a bimanual technique with two corneal accesses. The surgery was successful in lowering uncontrolled IOP without device repositioning. A free lumen and a IOP in the low range of tens was observed during follow-up.

Conclusions and importance: PreserFlo ® MicroShunt obstruction by vitreous in pseudophakic patient is a possible complication. Anterior vitrectomy without the need of tube repositioning was successful in lowering uncontrolled IOP.

Keywords: Anterior vitrectomy; Minimally invasive glaucoma surgery (MIGS); PreserFlo ® MicroShunt; Primary open angle glaucoma; Vitreous device obstruction.

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Conflict of interest statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The authors have no conflict of interest.

Figures

Fig. 1
Fig. 1
AS-OCT ANTERION ® image showing the correct position and the pervious lumen few days after the implantation.
Fig. 2
Fig. 2
Slit-lamp photograph showing a partially pigmented vitreous strand entering the anterior chamber through the temporal pupillary margin.
Fig. 3
Fig. 3
Magnified AS-OCT ANTERION® image showing the vitreous in the anterior chamber bending towards the device (white arrows) with the lumen of the PreserFlo® MicroShunt obstructed by vitreous (white arrowhead).(For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
Fig. 4
Fig. 4
Postoperative AS-OCT ANTERION ® image showing the device lumen pervious without vitreous the day after anterior.
See this image and copyright information in PMC

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