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Incidence and Risk factors of Acute Postoperative Endophthalmitis after Cataract Surgery in Korea
Ann Optom Contact Lens 2020;19:97-102
Published online December 25, 2020
© 2020 The Korean Optometry & Contact Lens Study Society

Seung Jae Lee, MD1, Jiwon Kim, MD1, Jung Hwa Hong, MS2, Eun Jee Chung, MD, PhD1

Department of Ophthalmology, National Health Insurance Service Ilsan Hospital1, Goyang, Korea
Research and Analysis Team, National Health Insurance Service Ilsan Hospital2, Goyang, Korea
Correspondence to: Eun Jee Chung, MD, PhD
Department of Ophthalmology, National Health Insurance Service Ilsan Hospital, #100 Ilsan-ro, Ilsandong-gu, Goyang 10444, Korea
Tel: 82-31-900-0590, Fax: 82-31-900-0049
E-mail: eunjee95@nhimc.or.kr
* This work was supported by a National Health Insurance Ilsan Hospital grant (NHIMC 2018-20-016). This study used data from the NHIS-NCS 2002-2016, which was released by the KNHIS. The authors alone are responsible for the content and
writing of this article.
* This study was presented as a poster at the 122nd Annual Meeting of the Korean Ophthalmological Society 2019.
Received September 10, 2020; Revised December 7, 2020; Accepted December 7, 2020.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Purpose: To evaluate the incidence and risk factors of acute postoperative endophthalmitis (POE) after cataract surgery from 2011 to 2015 in Korea.
Methods: A nationwide retrospective cohort study was performed by using claims data from the Korean National Health Insurance Service (KNHIS) database collected during 2011 to 2015. Cataract surgery and acute POE were identified using Korean Electronic Data Interchange (KEDI) code and Korean Classification of Disease (KCD)-7 code.
Results: A total of 2,236,107 eyes in 1,591,176 patients (60.16% female; mean age 69.37 ± 10.07 years) underwent cataract surgery from 2011 to 2015 in Korea. The incidence of acute POE after cataract surgery was 0.09% and remained stable during 5 years period as the unadjusted incidence rate ratio (IRR) was 1.025 (95% confidence interval 0.988-1.064; p = 0.1932). A total of 2,041 eyes experienced acute POE (51.23% female; mean age 67.84 ± 11.99 years) after 8.46 ± 10.18 days after the cataract surgery. In multivariate analysis, intraoperative posterior capsule rupture, male gender and preoperative diabetes were associated with a higher risk of acute POE: 5.643 (4.454-7.148, p < 0.001), 1.408 (1.283-1.544, p < 0.001), 1.241 (1.125-1.371, p = 0.0167), respectively. Living in rural area, low household income and surgery in tertiary healthcare centers were socioeconomic factors significantly associated with higher risk of acute POE.
Conclusions: The incidence of acute POE after cataract surgery in Korea remained unchanged during 5-year study period. Intraoperative posterior capsule rupture, male, preoperative diabetes, low household income and surgery in tertiary healthcare centers were associated with higher risk.
Keywords : Cataract surgery; Endophthalmitis


December 2020, 19 (4)