Abstract
Oxygen-derived free radicals have been implicated in tissue injury following ischemia and reperfusion (reoxygenation). It has been hypothesized that the radicals are produced during the early reperfusion stage. Recently, submacular implantation of retinal pigment epithelium cells has been reported. It is probable that during the procedure, the transplant and the 180-degree folded outer retina underwent a period of ischemia, followed by reoxygenation. We, therefore, infer that free radicals were produced during the reoxygenation stage of the procedure, injuring both tissues. We suggest that these hypotheses be investigated with the aim of improving the surgical outcome in eyes with age-related macular degeneration.
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