European journal of ophthalmology · 2020
A novel surgical technique for the treatment of a filtration bleb extending over 180° after Xen gel stent implantation.
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Välimäki Juha
Аннотация
PURPOSE: To describe a novel surgical treatment option for managing a symptomatic filtration bleb extending into the three quadrants with adequate IOP control after Xen gel stent implantation.
METHODS: A 62-year-old female with pseudoexfoliative glaucoma with an IOP of 34 mmHg underwent implantation of a Xen to reduce the IOP in her right eye. The IOP responded well to the procedure, but the patient developed a persistent giant filtration bleb with foreign body sensation and pain. A huge filtering bleb of over 180° after Xen implant surgery was managed by splitting the giant bleb into two parts, posterior dissection into the intermuscular space, a biodegradable collagen device implantation, and suturing the conjunctiva in two parts with absorbable and nonabsorbable sutures.
RESULTS: Before the operation for treatment of a giant bleb, the patient had an IOP of 12 mmHg, a best-corrected visual acuity (BCVA) of 20/40, corneal dellen, and no antiglaucoma medication. Following the bleb recession procedure, the IOP was 16 mmHg, BCVA improved to 20/20, there were no corneal dellen and the patient reported resolution of her bleb discomfort. The IOP and BCVA remained stable through 18 months of follow-up and no antiglaucoma medications or additional surgical procedures were required.
CONCLUSION: The novel technique described here can be one option to treat this rare (over 180°) bleb formation after Xen Gel Stent implantation without adversely affecting IOP control.
METHODS: A 62-year-old female with pseudoexfoliative glaucoma with an IOP of 34 mmHg underwent implantation of a Xen to reduce the IOP in her right eye. The IOP responded well to the procedure, but the patient developed a persistent giant filtration bleb with foreign body sensation and pain. A huge filtering bleb of over 180° after Xen implant surgery was managed by splitting the giant bleb into two parts, posterior dissection into the intermuscular space, a biodegradable collagen device implantation, and suturing the conjunctiva in two parts with absorbable and nonabsorbable sutures.
RESULTS: Before the operation for treatment of a giant bleb, the patient had an IOP of 12 mmHg, a best-corrected visual acuity (BCVA) of 20/40, corneal dellen, and no antiglaucoma medication. Following the bleb recession procedure, the IOP was 16 mmHg, BCVA improved to 20/20, there were no corneal dellen and the patient reported resolution of her bleb discomfort. The IOP and BCVA remained stable through 18 months of follow-up and no antiglaucoma medications or additional surgical procedures were required.
CONCLUSION: The novel technique described here can be one option to treat this rare (over 180°) bleb formation after Xen Gel Stent implantation without adversely affecting IOP control.