Korean J Ophthalmol > Volume 35(2); 2021 > Article
Korean Journal of Ophthalmology 2021;35(2):153-158.
DOI: https://doi.org/10.3341/kjo.2020.0074    Published online February 18, 2021.
Prevalence of Macular Abnormalities Identified Only on Optical Coherence Tomography in Korean Patients Scheduled for Cataract Surgery
Seo-Yeon Hong, Seonjoo Kim, So-Hyang Chung
Department of Ophthalmology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
Correspondence:  So-Hyang Chung, Tel: +82-2-2258-6203, Fax: +82-2-2258-1196, 
Email: chungsh@catholic.ac.kr
Received: 27 May 2020   • Revised: 5 January 2021   • Accepted: 17 February 2021
Abstract
Purpose
To assess the prevalence of macular abnormalities identified only on macular optical coherence tomography (OCT) which were not suspected by biomicroscopic fundus examination, and examine the clinical outcome of patients with these macular abnormalities during preoperative evaluation for cataract surgery in a large series of Korean patients.

Methods
Macular OCT was performed on patients scheduled for routine cataract surgery by the same physician at Seoul St. Mary’s Hospital, between June 2018 and November 2019. The patients’ medical records were reviewed retrospectively to obtain demographic data and the results of preoperative evaluation before cataract surgery. Patients were divided into two groups based on the preoperative macular OCT results: normal and abnormal OCT groups.

Results
Nine hundred eighty-seven eyes (698 patients) were included in this study. Macular OCT identified abnormalities in 44 eyes (4.5%) of 35 patients (5.0%). Twenty-one eyes (2.1%) had age-related macular degeneration, 20 eyes (2.0%) had epiretinal membrane, and three eyes (0.3%) had lamellar hole. Patients with macular abnormalities identified on macular OCT had a statistically significant higher mean age than those who had normal OCT findings (p < 0.001). Best-corrected visual acuity was worse in patients with abnormal macular OCT after cataract surgery (p = 0.048).

Conclusions
In the preoperative evaluation for cataract surgery in Korean patients, one in every 20 patients had macular abnormalities identified only on macular OCT in spite of unremarkable macular findings on biomicroscopic funduscopy. Age was significantly higher in patients with abnormal macular OCT findings. Thus, inclusion of macular OCT examination in preoperative screening before routine cataract surgery would be beneficial.
Key Words: Cataract extraction, Diagnostic imaging, Optical coherence tomography


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