| AACG | acute angle closure glaucoma |
| ACE2 | angiotensin-converting enzyme 2 |
| AKI | acute kidney injury |
| ARDS | acute respiratory distress syndrome |
| ARN | acute retinal necrosis |
| CMV | cytomegalovirus |
| COVID-19 | coronavirus disease 2019 |
| CT | computed tomography |
| EBV | Epstein-Barr virus |
| ECs | epithelial cells |
| HBV | hepatitis B virus |
| HCV | hepatitis C virus |
| HIV | human immunodeficiency virus |
| HSV | herpes simplex virus |
| HZV | Herpes zoster virus |
| ICU | intensive care unit |
| MFS | Miller Fisher syndrome |
| OCT | optical coherence tomography |
| SARS-CoV-2 | severe acute respiratory syndrome coronavirus 2 |
| VZV | varicella-zoster virus |