J Korean Ophthalmol Soc.
2022 Sep;63(9):747-753. 10.3341/jkos.2022.63.9.747.
Comparison of the Optimized Intraocular Lens Constants Calculated by Automated and Manifest Refraction for Korean
- Affiliations
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- 1Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
- 2Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
- 3Department of Ophthalmology, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
- 4Department of Ophthalmology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- 5Department of Ophthalmology, Yeouido St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- 6Department of Ophthalmology, Gyeongsang National University Hospital, College of Medicine, Gyeongsang National University, Jinju, Korea
- 7Department of Ophthalmology, Daejeon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Korea
- 8Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
- 9Department of Ophthalmology, Dankook University College of Medicine, Cheonan, Korea
- 10Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
- 11Department of Ophthalmology, Hallym University College of Medicine, Chuncheon, Korea
- 12Department of Ophathalmology, HanGil Eye Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea
- 13Department of Ophthalmology, St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
- 14Department of Ophthalmology, Chonnam National University Medical School, Gwangju, Korea
- 15Department of Ophthalmology, Jeonbuk National University Medical School, Jeonju, Korea
- 16Department of Ophthalmology, Konyang University College of Medicine, Daejeon, Korea
- 17Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Korea
- 18Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
- KMID: 2533720
- DOI: http://doi.org/10.3341/jkos.2022.63.9.747
Abstract
- Purpose
To derive the optimized intraocular lens (IOL) constants from automated and manifest refraction after cataract surgery in Korean patients, and to evaluate whether there is a difference in optimized IOL constants according to the refraction method.
Methods
This retrospective multicenter cohort study enrolled 4,103 eyes of 4,103 patients who underwent phacoemulsification and in-the-bag IOL implantation at 18 institutes. Optimized IOL constants for the SRK/T, Holladay, Hoffer Q, and Haigis formulas were calculated via autorefraction or manifest refraction of samples using the same biometry and IOL. The IOL constants derived from autorefraction and manifest refraction were compared.
Results
Of the 4,103 eyes, the majority (62.9%) were measured with an IOLMaster 500 followed by an IOLMaster 700 (15.2%). A total of 33 types of IOLs were used, and the Tecnis ZCB00 was the most frequently used (53.0%). There was no statistically significant difference in IOL constants derived from autorefraction and manifest refraction when IOL constants were optimized with a large number of study subjects. On the other hand, optimized IOL constants derived from autorefraction were significantly smaller than those from manifest refraction when the number of subjects was small.
Conclusions
It became possible to use the IOL constants optimized from Koreans to calculate the IOL power. However, if the IOL constant is optimized using autorefraction in a small sample group, the IOL constant tends to be small, which may lead to refractive error after surgery.
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