Retinal perforation or incarceration from penetrating trauma rarely causes acute rheg-matogenous retinal detachment. The associated corneoscleral wound provides access for extrinsic fibroblasts so that combined tractional and rhegmatogenous retinal detachment presents sometimes much later. Vitrectomy and internal tamponade with or without relieving retinectomy may be required as severe proliferative vitreoretinopathy commonly occurs. Traumatic giant retinal tears have been reported to occur in 22% of open globe injuries .
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