Related Experiment Video
Updated: Sep 2, 2025
10:52
Closure of a Patent Foramen Ovale PFO: An Intervention Sequence
Published on: December 23, 2022
3.6K
Blood Reflux Through a PreserFlo MicroShunt Device After Needling
Paola Cassottana1, Ilaria Di Mola, Lorenzo Ferro Desideri
1Clinica Oculistica, Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DiNOGMI), University of Genoa, and IRCCS Ospedale Policlinico San Martino, Genoa, Italy.
Journal of Glaucoma
|August 8, 2022
Summary
A case of hyphema occurred after PreserFlo MicroShunt surgery revision. This is the first reported instance of blood reflux through the implant into the anterior chamber, leading to increased intraocular pressure.
Area of Science:
- Ophthalmology
- Glaucoma Surgery
Background:
- Open-angle glaucoma management often requires surgical intervention for inadequate intraocular pressure (IOP) control.
- PreserFlo MicroShunt implantation is a surgical option for managing refractory glaucoma.
- Bleb failure due to subconjunctival scarring can necessitate revision procedures.
Observation:
- A patient with open-angle glaucoma underwent PreserFlo MicroShunt implantation.
- Following bleb failure, a needling revision was performed.
- Blood reflux through the PreserFlo MicroShunt into the anterior chamber was observed during the revision.
Findings:
- The blood reflux caused a significant rise in intraocular pressure.
- Medical management including acetazolamide and topical steroids/antibiotics resolved the hyphema.
- The hyphema resolved within two weeks, with a notable decrease in IOP.
Implications:
- This case highlights a potential complication of PreserFlo MicroShunt revision surgery.
- Understanding and managing hyphema after MicroShunt revision is crucial.
- This is the first documented instance of blood reflux via PreserFlo MicroShunt after a needling procedure.
