Scanning Electron Microscopy Evaluation of an EX-PRESS Mini Glaucoma Shunt After Explantation
| Autor: | Paolo Cecchini, Gianluca Turco, Daniele Tognetto, Rossella D'Aloisio, Odilla Vattovani |
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| Přispěvatelé: | Tognetto, Daniele, Cecchini, Paolo, D'Aloisio, Rossella, Vattovani, Odilla, Turco, Gianluca |
| Rok vydání: | 2017 |
| Předmět: |
Male
glaucoma glaucoma surgery trabeculectomy EX-PRESS glaucoma device biocompatibility 030213 general clinical medicine medicine.medical_specialty genetic structures Anterior Chamber Scanning electron microscope medicine.medical_treatment Energy-dispersive X-ray spectroscopy Lumen (anatomy) Glaucoma 03 medical and health sciences 0302 clinical medicine Ophthalmology Microscopy medicine Humans Glaucoma Drainage Implants Device Removal Intraocular Pressure Aged business.industry Pseudoexfoliation Cataract surgery medicine.disease eye diseases Extracellular Matrix Prosthesis Failure Surgery Shunt (medical) Microscopy Electron Scanning 030221 ophthalmology & optometry sense organs business Glaucoma Open-Angle |
| Zdroj: | Journal of Glaucoma. 26:e1-e4 |
| ISSN: | 1057-0829 |
| DOI: | 10.1097/ijg.0000000000000521 |
| Popis: | We report a case of an explanted stainless steel miniature glaucoma drainage device (EX-PRESS) implanted under a scleral flap for pseudoexfoliation open-angle glaucoma surgical treatment. The glaucoma shunt was implanted in a 75-year-old white man with medically refractive glaucoma. Cataract surgery was performed simultaneously. After 2 years, the shunt extruded through the scleral flap and the conjunctiva and it was, therefore, explanted. Scanning electron microscopy images of the EX-PRESS mini glaucoma shunt were acquired to verify the patency of the device lumen and the presence of fibrosis or cellular adhesion on the device. Energy dispersive spectroscopy for chemical surface characterization of the EX-PRESS shunt was performed. Scanning electron microscopy-acquired images showed minimal extracellular material proliferation on the lumen device. The energy dispersive spectroscopy analysis revealed a high peak of carbon suggesting the organic nature of the residuals found on the shunt lumen. The surface showed few superficial pits, likely due to an initial corrosion process. |
| Databáze: | OpenAIRE |
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