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Choroidal structural changes in the early and late postinfectious periods of COVID-19: (A) total choroidal area was significantly reduced in the early postinfectious period compared with control subjects; this difference became insignificant in the late postinfectious period; (B) the choroidal vascularity index remained unchanged in both the early and late postinfectious periodss. TCA = total choroidal area; CVI = choroidal vascularity index.
