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Journal of Ophthalmology
Volume 2017 (2017), Article ID 9463871, 5 pages
Clinical Study

Clinical Analysis of Ocular Parameters Contributing to Intraoperative Pain during Standard Phacoemulsification

1Department of Ophthalmology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
2Department of Ophthalmology, Cheil Eye Hospital, Daegu, Republic of Korea

Correspondence should be addressed to Bo Young Chun

Received 10 January 2017; Revised 9 March 2017; Accepted 19 March 2017; Published 12 April 2017

Academic Editor: Tamer A. Macky

Copyright © 2017 Yong Koo Kang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose. To study the correlation between ocular parameters and subjective pain that patients perceived during phacoemulsification. Methods. Medical records of 142 patients who underwent standard phacoemulsification under topical anesthesia between March and August 2016 were retrospectively reviewed. The pain during phacoemulsification and 1 h after surgery was assessed and compared using a visual analog scale. In addition, demographic data, preoperative biometric parameters, and intraoperative surgical parameters were recorded. Results. Mean age of patients was 67.49 ± 12.50 years. The mean pain score was 2.26 ± 0.85 during phacoemulsification and 0.40 ± 0.69 postoperatively. Intraoperative pain was significantly associated with higher preoperative intraocular pressure (β = 0.220, ), greater anterior chamber depth (β = 0.210, ), and greater axial length (β = 0.181, ). Conclusions. To reduce the subjective pain when patients have high preoperative intraocular pressure, large anterior chamber depth, or great axial length, supplementary procedures may be required.