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Archivos de la Sociedad Española de Oftalmología

versión impresa ISSN 0365-6691

Resumen

DIAZ-LLOPIS, M. et al. Enzymatic vitrectomy by intravitreal autologous plasmin injection as initial treatment for macular epiretinal membranes and vitreomacular traction syndrome. Arch Soc Esp Oftalmol [online]. 2009, vol.84, n.2, pp.91-100. ISSN 0365-6691.

Purpose: To determine the effectiveness of intravitreal plasmin injection in the treatment of macular epiretinal membranes (MEM) and vitreomacular traction syndrome (VMTS) without associated pars plana vitrectomy. Methods: Design: Interventional, prospective, case series pilot study. Patients: Seven patients were enrolled in the study, 4 with MEM and 3 with VMTS. Treatment: 0.2 ml of autologous plasmin intravitreally injected under topical anesthesia was administered to all patients. The plasmin was obtained by a simplified method with urokinase. Main outcome measures: Degree of detachment of the MEM and the VMTS measured by optical coherence tomography (OCT), and the best corrected visual acuity (Snellen scale) before and one month after the plasmin injection. Results: The follow-up period was completed by all the patients. The MEM remained attached to the retina in all cases, as measured either by biomicroscopy or OCT. The VMTS was completely detached from the foveal area in all cases, with the disappearance of secondary tractional retinal folds and recovery of the normal macular anatomic architecture as measured by OCT. Visual acuity was not modified in any of the MEM patients, and improved in all VMTS patients. No adverse effects were observed. Conclusion: In our case series, intravitreally injected autologous plasmin was not effective in the treatment of MEM, but resolved VMTS successfully, improving the visual acuity and releasing the retinal traction without the need for associated pars plana vitrectomy. Larger studies to confirm the efficacy of this technique and the possibility of success after repeated injections are warranted.

Palabras clave : Autologous plasmin; pharmacologic vitreolysis; epiretinal membrane; macular pucker; vitreomacular traction syndrome; enzimatic vitrectomy; enzymatic vitreolysis.

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