Zapata MÁ, García SB, Sánchez A, et al. - In this case-control study involving patients between 18 and 55 years old with PCR-confirmed SARS-CoV-2 infection during the last 3 months, researchers sought to analyse and quantify the possible retinal microvascular abnormalities. A colour photograph, an optical coherence tomography (OCT) and angiography using OCT centred on the fovea have been conducted. Control group comprised 27 individuals: group 1 included 24 patients, group 2 consisted of 24 patients and 21 participants were recruited for group 3. As compared with asymptomatic/paucisymptomatic cases or control individuals, patients with moderate and severe SARS-CoV-2 pneumonia had reduced central retinal vascular density.