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Rafaella de Cenço Lopes, Rodrigo Jorge, Rubens C Siqueira, Andre Messias, Ingrid U Scott; Magnet-Assisted Pars Plana Vitrectomy for Metallic Foreign Body Removal. Invest. Ophthalmol. Vis. Sci. 2014;55(13):2315.
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To describe the outcomes of patients who underwent removal of magnetic intraocular foreign bodies (MIFB) with magnet-assisted pars plana vitrectomy.
Medical records were reviewed of all patients who underwent magnet-assisted pars plana vitrectomy for MIFB removal at the University of Sao Paulo, Ribeirao Preto between January 2007 and April 2013. Data collected include best-corrected visual acuity (BCVA), retina status and complications such as endophthalmitis and phthisis bulbi. The surgery consisted of standard three-port pars plana vitrectomy and MIFB removal with an external electromagnet positioned in one of the superior sclerotomies (nasal or temporal). Comprehensive ophthalmologic evaluation was performed preoperatively and at weeks 4, 12±1, 24±2 and 48±2.
The study included 26 eyes of 26 patients, all of whom had 48-week follow-up data available. All 26 patients were men, and the median patient age was 31.5 years (range, 18 to 59 years). The MIFB was removed successfully in all patients. Median BCVA was 20/252 (range, no light perception to 20/20) at baseline, and 20/200 (range, no light perception to 20/20) at week 48. The median greatest linear dimension of the MIFB was 3.0mm (range, 2.0mm to 5.0mm). Retinal detachment was the most common complication (five eyes), endophthalmitis occurred in one eye (this eye developed phthisis bulbi).
Magnet-assisted pars plana vitrectomy is a reasonable alternative surgical technique for removal of MIFB.
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