Table 1

The incidence of ocular involvement with COVID-19 and prevalence of SARS-CoV-2 RNA in conjunctival swab in SARS-CoV-2 patients with and without conjunctival involvement.

Authors (reference)LocationNumber of patients with COVID-19, NNumber of patients with ocular involvement, NNumber of patients with positive SARS-CoV-2 RNA RT-PCR
conjunctival swab (with conjunctival inflammation), n
Number of patients with positive SARS-CoV-2 RNA RT-PCR
conjunctival swab (without conjunctival inflammation), n
Guan et al40Multiple cities, China10999Test not doneTest not done
Chen et al43Wuhan, China53527Test not doneTest not done
Xia et al49Hangzhou, China30110
Wu et al50Hubei, China381220
Seah et al51Singapore17100
Zhou et al52Wuhan, China67103
Zhang et al53Wuhan, China72210
  • CoV, coronavirus; SARS, severe acute respiratory syndrome.