{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T15:10:06Z","timestamp":1756307406732,"version":"3.44.0"},"reference-count":25,"publisher":"BMJ","issue":"8","license":[{"start":{"date-parts":[[2021,8,1]],"date-time":"2021-08-01T00:00:00Z","timestamp":1627776000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/bmj.com\/coronavirus\/usage"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2021,8,10]]},"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:p>During the COVID-19 pandemic, precautionary measures taken by various countries include individual movement restrictions causing significant lifestyle changes and affecting dietary patterns. A 23-year-old woman presented with reduced left eye vision over 1 week and amenorrhea for 4 months. She was diagnosed with severe iron-deficiency anaemia causing central retinal vein occlusion and amenorrhea. During the lockdown, there was a change in her diet with greatly reduced iron intake. Iron is an essential mineral for retina metabolism and function. Iron supplementation was done with improvement in her vision. This case demonstrates the potential impact of lockdown measures on nutrition and health. Education of the general population on maintaining appropriate nutrition during periods of movement restriction is important and that nutritional evaluation and supplementation should be considered in patients with drastic changes in dietary pattern.<\/jats:p>","DOI":"10.1136\/bcr-2021-242639","type":"journal-article","created":{"date-parts":[[2021,8,24]],"date-time":"2021-08-24T13:03:57Z","timestamp":1629810237000},"page":"e242639","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["COVID-19 lockdown measures induced severe iron-deficiency anaemia resulting in central retinal vein occlusion and amenorrhea"],"prefix":"10.1136","volume":"14","author":[{"given":"Yu Heng","family":"Kwan","sequence":"first","affiliation":[{"name":"Internal Medicine, Singapore General Hospital, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Natalie Liling","family":"Woong","sequence":"additional","affiliation":[{"name":"Internal Medicine, Singapore General Hospital, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Reuben Chao Ming","family":"Foo","sequence":"additional","affiliation":[{"name":"Cataract and Comprehensive Ophthalmology, Singapore National Eye Centre, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tharmmambal","family":"Balakrishnan","sequence":"additional","affiliation":[{"name":"Internal Medicine, Singapore General Hospital, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2021,8,24]]},"reference":[{"unstructured":"Blair K , Czyz CN . 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