{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:59:15Z","timestamp":1760151555679,"version":"build-2065373602"},"reference-count":9,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2022,3,20]],"date-time":"2022-03-20T00:00:00Z","timestamp":1647734400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>We aimed to evaluate the effects of the coronavirus disease (COVID-19) pandemic on the Ophthalmology Department. This study was based on data collected between January 2019 and November 2021. We divided patients scheduled for eye care during pre-COVID-19 (January\u2013December 2019), early COVID-19 (January\u2013December 2020), and late COVID-19 (January\u2013November 2021) periods. Changes in the outpatient cancellation rate in each department were analyzed and compared in the pre-, early, and late periods. The basic information of cancellation and reason for not visiting the clinic were also analyzed. Overall, 121,042 patients were scheduled to visit the Sanggye Paik Hospital Ophthalmology Department. The overall cancellation rate was 19.13% during pre-COVID-19, 24.13% during early COVID-19, and 17.34% during late COVID-19. The reasons for not visiting the clinic included hospital, patient, and contact factors; hospitalization in other departments and hospitals; and death. The Strabismus\/Pediatric Ophthalmology Department showed the highest cancellation rate of 24.21% over three years. There were no significant differences in the causes of hospital visits by period. The COVID-19 pandemic has caused an overall decrease in the number of ophthalmic outpatients. However, after about a year, the number of outpatients in these departments recovered to the level before the COVID-19 outbreak.<\/jats:p>","DOI":"10.3390\/jcm11061722","type":"journal-article","created":{"date-parts":[[2022,3,20]],"date-time":"2022-03-20T21:30:14Z","timestamp":1647811814000},"page":"1722","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Impact of the Coronavirus Disease 2019 Pandemic on the Ophthalmology Department"],"prefix":"10.3390","volume":"11","author":[{"given":"Ha-Eun","family":"Sim","sequence":"first","affiliation":[{"name":"Department of Ophthalmology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul 01757, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6129-7512","authenticated-orcid":false,"given":"Kyeong-Do","family":"Jeong","sequence":"additional","affiliation":[{"name":"Eyelove Eye Clinic, Seoul 01757, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8081-7771","authenticated-orcid":false,"given":"Je-Hyung","family":"Hwang","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul 01757, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,3,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"727","DOI":"10.1056\/NEJMoa2001017","article-title":"A Novel Coronavirus from Patients with Pneumonia in China","volume":"382","author":"Zhu","year":"2020","journal-title":"N. Engl. J. Med."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"e26","DOI":"10.1016\/S1473-3099(20)30773-8","article-title":"What Defines an Efficacious COVID-19 Vaccine? A Review of the Challenges Assessing the Clinical Efficacy of Vaccines Against SARS-CoV-2","volume":"21","author":"Hodgson","year":"2021","journal-title":"Lancet Infect. Dis."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"491","DOI":"10.4048\/jbc.2021.24.e55","article-title":"Impact of the COVID-19 Pandemic on the Diagnosis and Surgery of Breast Cancer: A Multi-Institutional Study","volume":"24","author":"Kang","year":"2021","journal-title":"J. Breast Cancer."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"4645","DOI":"10.2147\/OPTH.S341739","article-title":"The Impact of COVID-19 on Missed Ophthalmology Clinic Visits","volume":"15","author":"Brant","year":"2021","journal-title":"Clin. Ophthalmol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"24434","DOI":"10.1038\/s41598-021-03887-4","article-title":"Provocation of Dry Eye Disease Symptoms During COVID-19 Lockdown","volume":"11","author":"Neti","year":"2021","journal-title":"Sci. Rep."},{"key":"ref_6","unstructured":"WHO (2020, June 16). Rapid Assessment of Service Delivery for NCDs during the COVID-19 Pandemic. Available online: https:\/\/www.who.int\/publications\/m\/item\/rapid-assessment-of-service-delivery-for-ncds-during-the-covid-19-pandemic."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"725","DOI":"10.4103\/ijo.IJO_797_20","article-title":"Effect of COVID-19 Related Lockdown on Ophthalmic Practice and Patient Care in India: Results of a Survey","volume":"68","author":"Nair","year":"2020","journal-title":"Indian J. Ophthalmol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1427","DOI":"10.1007\/s00417-020-04682-z","article-title":"Sustainable Practice of Ophthalmology During COVID-19: Challenges and Solutions","volume":"258","author":"Lim","year":"2020","journal-title":"Graefes Arch. Clin. Exp. Ophthalmol."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"697","DOI":"10.1007\/s10561-021-09934-8","article-title":"Corneal Transplant During COVID-19 Pandemic: The Italian Eye Bank National Report","volume":"22","author":"Aiello","year":"2021","journal-title":"Cell Tissue Bank."}],"container-title":["Journal of Clinical Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2077-0383\/11\/6\/1722\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T22:39:55Z","timestamp":1760135995000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2077-0383\/11\/6\/1722"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,3,20]]},"references-count":9,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2022,3]]}},"alternative-id":["jcm11061722"],"URL":"https:\/\/doi.org\/10.3390\/jcm11061722","relation":{},"ISSN":["2077-0383"],"issn-type":[{"type":"electronic","value":"2077-0383"}],"subject":[],"published":{"date-parts":[[2022,3,20]]}}}