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Changes in crystalline lens shape with accommodation Akira Ishida 1 , Yoshihiko Iida 1 , Nobuyuki Shoji 1 1Department of Ophthalmology, Kitasato University School of Medicine pp.1009-1012
Published Date 2018/7/15
DOI https://doi.org/10.11477/mf.1410212758
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Abstract Purpose:To assess changes in crystalline lens shape with accommodation using anterior segment optical coherence tomography〔OCT;CASIA2 (Tomey Inc.)〕.

Cases and Method:Eleven healthy subjects(mean age, 27±4 years;range, 22-32 years)were recruited. Their subjective refraction ranged from +0.5〜−2.0D. The dominant eye was determined using the hole-in-card test, and changes in crystalline lens shape with the accommodation of the dominant eye were analyzed using CASIA2. The anterior chamber depth(ACD), anterior crystalline lens radius of curvature(ALRC), posterior crystalline lens radius of curvature(PLRC), crystalline lens thickness(LT), and posterior surface of lens position(PSLP)were measured for each participant in response to 0D, 1D, 2D, and 3D of accommodative stimuli generated by the internal lens and internal fixation target of CASIA2.

Results:ALRC gradually decreased with accommodation as follows:11.87±1.22 mm at 0D and 10.86±1.08 mm at 3D(p=0.0357, Wilcoxon signed-rank test). There were no significant changes in ACD, PLRC, LT, and PSLP.

Conclusion:Change in ALRC can significantly contribute to accommodation.


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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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