What’s known
The coronavirus has been shown to cause serious eye diseases in animals but ocular symptoms in humans are rare and mild. Recent studies have defined endothelial damage as one of the most prominent causes of systemic vascular thromboembolic and inflammatory manifestations associated with Covid-19. Sars-CoV-2 may exhibit direct ocular diffusion through two blood-retinal barriers (BRBs) or associated with thrombotic sensitivity identified in Covid-19.