id author title date pages extension mime words sentences flesch summary cache txt cord-286573-k4khwvt7 Peng, Michael The Role of the Ocular Tissue in SARS-CoV-2 Transmission 2020-10-02 .txt text/plain 4362 305 54 Here, we reviewed both clinical and research evidence on the ocular manifestations associated with COVID-19, the presence of SARS-CoV-2 in ocular surface tissues and tears, and the potential role of the eye in contracting SARS-CoV-2. For this review, relevant studies that emphasized ocular manifestations of COVID-19 or SARS-CoV-2, viral detection of SARS-CoV-2 in ocular surface secretions or tears, and ACE2 presence in ocular tissues were included. 29 Zhang et al also reported that one of the two COVID-19 patients with conjunctivitis was SARS-CoV-2 RNA positive in the tear sample. Similarly, in a cross sectional study of 33 COVID-19 patients, most of the ocular samples were collected more than 7 days of symptom onset, and Xie et al found only 2 cases with positive ocular SARS-CoV-2 RNA results. 44 Recent studies have attempted to determine ACE2 in ocular surface tissues, such as the conjunctiva and cornea, which are exposed to the external environment and are potential entry points for SARS-CoV-2 infection. ./cache/cord-286573-k4khwvt7.txt ./txt/cord-286573-k4khwvt7.txt