Accommodation-induced variations in retinal thickness measured by spectral domain optical coherence tomography

Shanhui Fan; Yong Sun; Cuixia Dai; Haihua Zheng; Qiushi Ren; Shuliang Jiao; Chuanqing Zhou

doi:10.1117/1.JBO.19.9.096012

18 September 2014 Accommodation-induced variations in retinal thickness measured by spectral domain optical coherence tomography

Shanhui Fan, Yong Sun, Cuixia Dai, Haihua Zheng, Qiushi Ren, Shuliang Jiao, Chuanqing Zhou

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Journal of Biomedical Optics, Vol. 19, Issue 9, 096012 (September 2014). https://doi.org/10.1117/1.JBO.19.9.096012

Abstract

To research retinal stretching or distortion with accommodation, accommodation-induced changes in retinal thickness (RT) in the macular area were investigated in a population of young adults (n=23) by using a dual-channel spectral domain optical coherence tomography (SD-OCT) system manufactured in-house for this study. This dual-channel SD-OCT is capable of imaging the cornea and retina simultaneously with an imaging speed of 24 kHz A-line scan rate, which can provide the anatomical dimensions of the eye, including the RT and axial length. Thus, the modification of the RT with accommodation can be calculated. A significant decrease in the RT (13.50±1.25 μm) was observed during maximum accommodation. In the 4 mm×4 mm macular area centered at the fovea, we did not find a significant quadrant-dependent difference in retinal volume change, which indicates that neither retinal stretching nor distortion was quadrant-dependent during accommodation. We speculate that the changes in RT with maximum accommodation resulted from accommodation-induced ciliary muscle contractions.

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Shanhui Fan, Yong Sun, Cuixia Dai, Haihua Zheng, Qiushi Ren, Shuliang Jiao, and Chuanqing Zhou "Accommodation-induced variations in retinal thickness measured by spectral domain optical coherence tomography," Journal of Biomedical Optics 19(9), 096012 (18 September 2014). https://doi.org/10.1117/1.JBO.19.9.096012

Published: 18 September 2014

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