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Comparison of Ocular Biometry Using Ultrasound and Swept-source Optical Coherence Tomography in Severe Cataract
Ann Optom Contact Lens 2020;19:1-4
Published online March 25, 2020
© 2020 The Korean Optometry & Contact Lens Study Society

Hea Young Oh, MD, Jeong Hoon Choi, BS, Young Kwon Chung, MD

Department of Ophthalmology, Uijeongbu St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Korea
Correspondence to: Young Kwon Chung, MD
Department of Ophthalmology, Uijeongbu St. Mary’s Hospital, #271 Cheonbo-ro, Uijeongbu 11765, Korea
Tel: 82-31-820-3110, Fax: 82-31-847-3418
E-mail: eisengard@catholic.ac.kr
Received October 22, 2019; Revised February 12, 2020; Accepted February 17, 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 compare the ocular biometry and prediction of postoperative refractive outcomes using IOL Master® 700 (Carl Zeiss Meditec AG, Jena, Germany) and A-scan (Aviso®, Quantel Medical, Cournon-d'Auvergne, France) in severe cataract.
Methods: Seventy nine eyes with severe cataract under visual acuity of 1.7 logMAR were scheduled for cataract surgery. Axial length and anterior chamber depth were measured preoperatively with IOL Master® 700 and A-scan. Mean absolute error was obtained with the difference between preoperative predictive refraction and postoperative refraction outcome using autorefraction.
Results: Forty three cases received phacoemulsification and 36 received extracapsular cataract extraction. The mean absolute error between IOL Master® 700 and A-scan in 20 eyes received phacoemulsification and 11 eyes received extracapsular cataract extraction (ECCE) was not significant (p < 0.001 and p < 0.001, respectively). IOL Master® 700 measured mean axial lengths and anterior chamber depths longer than A-scan in phacoemulsification group (p < 0.001 and p < 0.001, respectively). However, there was no significant difference in mean axial length of ECCE group between two devices (p = 0.350).
Conclusions: There was no significant difference between IOL Master® 700 and A-scan in prediction of refractive outcomes after surgery of severe cataract under visual acuity of 1.7 logMAR. If available, IOL Master® 700 can be considered as reliable method for prediction of postoperative refractive outcomes in cases of severe cataract.
Keywords : A-scan; Cataract surgery; IOL Master® 700; Refractive error; Visual acuity


March 2020, 19 (1)