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In April 2020, a female patient with a history of hypertension, diabetes mellitus and chronic kidney disease presented with 2\u2009days of loose, watery stools, nasal congestion and severe lethargy. The patient denied dyspnoea or fever. A week after the initial symptoms, the patient reported decreased vision from the left eye. Dilated funduscopy and fluorescein angiography suggested hemi-CRVO. The patient refused intravitreal antivascular endothelial growth factor agents because of non-severe visual loss. Testing was positive for COVID-19 IgG antibodies; reverse transcription PCR was not available. Vision improved within 3\u2009weeks of presentation. We recommend that clinicians keep a high suspicion for acute onset of thrombotic events in patients with COVID-19 and thrombotic predisposing risk factors.<\/jats:p>","DOI":"10.1136\/bcr-2021-246428","type":"journal-article","created":{"date-parts":[[2021,11,1]],"date-time":"2021-11-01T13:10:31Z","timestamp":1635772231000},"page":"e246428","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":5,"title":["Hemi-central retinal vein occlusion as a rare manifestation of the hypercoagulable state in COVID-19"],"prefix":"10.1136","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7801-2165","authenticated-orcid":false,"given":"Jose R","family":"Russe-Russe","sequence":"first","affiliation":[{"name":"Internal Medicine, Nassau University Medical Center, East Meadow, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alejandro","family":"Alvarez-Betancourt","sequence":"additional","affiliation":[{"name":"Internal Medicine, Nassau University Medical Center, East Meadow, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amanda","family":"Milburn","sequence":"additional","affiliation":[{"name":"College of Osteopathic Medicine, NYIT, Old Westbury, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Prachi","family":"Anand","sequence":"additional","affiliation":[{"name":"Internal Medicine\/Rheumatology, Nassau University Medical Center, East Meadow, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2021,11,1]]},"reference":[{"key":"2025082711243177000_14.11.e246428.1","unstructured":"Kiew S , Ting DSW . 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