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Authors
Nagase, Daisuke Division of Ophthalmology and Visual Science, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University
Akura, Junsuke Kushimoto Arita Hospital
Omatsu, Yutaka Division of Ophthalmology and Visual Science, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University
Inoue, Yoshitsugu Division of Ophthalmology and Visual Science, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University Researchers DB KAKEN
Keywords
anterior segment
crystalline lens
optical coherence tomography
Abstract
Background: There are no reports on accurate measurement of lens equatorial diameter of the living human eye. This study aimed to measure lens equatorial diameter with a special measurement device during cataract surgery and examine the relationships with preoperative parameters. Methods: From April 7 to December 1, 2019, the equatorial diameters of 24 eyes from 24 patients who underwent cataract surgery at Kushimoto Arita Hospital were measured with a loop shaped measurement device during cataract surgery. Correlations between the value of the diameters and various preoperative parameters measured by CASIA2® were evaluated. Results: The average value of the measured equatorial diameter using the device was 10.5 ± 0.4 mm and the value estimated by circular approximation using the CASIA2® was 10.1 ± 0.7 mm. A significant difference was observed between these two groups (P = 0.016), and only a weak correlation was observed (γ = 0.31). A positive correlation was observed between equatorial diameter and anterior chamber depth (ACD) or anterior chamber width (ACW) (γ = 0.57 and 0.47, respectively). No significant correlation was found between other parameters and the value measured by the device. Conclusion: Our method is a completely new approach to measuring the living human lens equatorial region of the eye. No complications were observed in any of the cases. One new finding was the values of the lens equatorial diameters are actually longer than those reported previously. The results suggest that the values of the equatorial diameter measured by the loop device and those estimated by CASIA2® measurement were closer than those reported previously by other methods, although both were slightly different. We conclude that it is still difficult to estimate the equatorial diameter of the living human lens using preoperative examination parameters. This research will greatly contribute to the development of accommodative intraocular lenses in the future.
Publisher
Tottori University Medical Press
Content Type
Journal Article
Link
ISSN
05135710
EISSN
13468049
NCID
AA00892882
Journal Title
Yonago Acta Medica
Current Journal Title
Yonago Acta Medica
Volume
65
Issue
1
Start Page
53
End Page
62
Published Date
2022-02-22
Publisher-DOI
Text Version
Publisher
Rights
(C) 2022 Tottori University Medical Press.
Citation
Yonago Acta Medica. 2022, 65(1), 53-62. doi10.33160/yam.2022.02.010
Department
Faculty of Medicine/Graduate School of Medical Sciences/University Hospital
Language
English