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Published on: February 2, 2015
A case of malignant glaucoma following insertion of Preserflo™ MicroShunt
Corrado Gizzi1, Giacomo Costa1, Roberto Servadei1
1Ospedale Morgagni-Pierantoni, Forlì, Italy.
Purpose:
To describe a case of malignant glaucoma following insertion of a Preserflo™ MicroShunt in a patient with primary open angle glaucoma (POAG).
Design:
Case report.
Case:
A 46-year-old Caucasian man with medically uncontrolled POAG developed malignant glaucoma 1 day after an uncomplicated insertion of a mitomycin C (MMC) augmented Preserflo MicroShunt (PMS).
Results:
Initial medical treatment with aqueous suppressants and atropine 1% resulted in temporary resolution of the episode, although partial occlusion of the PMS with iris required a Nd:YAG laser iridotomy to open the inlet of the device. However, the malignant glaucoma recurred 6 days later. Temporary resolution was subsequently achieved with an Nd:YAG laser peripheral irido-zonulo-hyaloidotomy in combination with topical atropine, though a subsequent PMS revision was required due to bleb encapsulation. Unfortunately, the revision procedure was followed 2 days later, by a further recurrence of malignant glaucoma which was eventually resolved by left pars plana vitrectomy (PPV) in combination with clear lens extraction (CLE) and surgical irido-zonulo-hyaloidectomy. Subsequently, the eye remained stable, with a deep anterior chamber (AC), a partially functioning bleb, and an intraocular pressure (IOP) of 14 mmHg on one topical IOP-lowering agent, 8 months after the last procedure.
Conclusions:
The management of malignant glaucoma after PMS insertion and its subsequent clinical course is described. Apart from the propensity for a small tube such as the PMS to obstruct with iris when the AC is shallow, management is similar to other scenarios in which malignant glaucoma may develop.
Insights
This case report details malignant glaucoma after Preserflo™ MicroShunt implantation in primary open angle glaucoma. Management involved multiple interventions, including laser and surgery, to resolve the condition.
Area of Science:
- Ophthalmology
- Glaucoma Surgery
Background:
- Primary open angle glaucoma (POAG) management often requires surgical intervention.
- Preserflo™ MicroShunt (PMS) is a device used to lower intraocular pressure (IOP) in glaucoma patients.
Observation:
- A 46-year-old male with medically uncontrolled POAG developed malignant glaucoma one day after PMS insertion.
- The condition recurred multiple times despite various treatments, including laser iridotomy and revision surgery.
Findings:
- Malignant glaucoma following PMS insertion can occur, potentially due to iris occlusion of the device in shallow anterior chambers.
- Successful resolution was achieved with pars plana vitrectomy, clear lens extraction, and surgical irido-zonulo-hyaloidectomy.
Implications:
- This case highlights the importance of recognizing and managing malignant glaucoma post-PMS implantation.
- Treatment strategies may need to be tailored, considering the potential for device obstruction and recurrent episodes.
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