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Glaucoma drainage devices are currently used to manage high-risk, complicated, adult and pediatric glaucoma when standard filtration surgery with an antimetabolite is unsuccessful.1 The drainage device consists of a plate and a tube. The tube is directly implanted either into the anterior chamber or through the pars plana in eyes undergoing vitrectomy. Tube coverage is imperative to prevent conjunctival erosion, which would lead to tube exposure and pose a risk for the development of endophthalmitis.
Sclera, dura, fascia lata, and pericardium have been employed to cover the tube and fistula sites.2,3 Raviv et al4 recently published safety data in a study of 44 patients (44 eyes) who have had a pericardial patch graft placed to cover a glaucoma drainage device. In their retrospective study, they reported 5 cases of asymptomatic thinning of the pericardial patch graft without evidence of tube erosion. No cases of infection were reported. The mean ±SD follow-up was 10.2±4.0 months. Herein, we report 2 cases of tube erosion through the conjunctiva following use of commercially prepared pericardial patch grafts occurring 7 and 8 months postoperatively.
Lama PJ, Fechtner RD. Tube Erosion Following Insertion of a Glaucoma Drainage Device With a Pericardial Patch Graft. Arch Ophthalmol. 1999;117(9):1243–1244. doi:https://doi.org/
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