Research Papers: Imaging

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

[+] Author Affiliations
Shanhui Fan

Shanghai Jiao Tong University, School of Biomedical Engineering, Shanghai 200240, China

Yong Sun

Shanghai Jiao Tong University, School of Biomedical Engineering, Shanghai 200240, China

Cuixia Dai

Shanghai Jiao Tong University, School of Biomedical Engineering, Shanghai 200240, China

Haihua Zheng

Second Affiliated Hospital of Wenzhou Medical College, Department of Ophthalmology, Wenzhou 325027, China

Qiushi Ren

Peking University, College of Engineering, Department of Biomedical Engineering, Beijing 100871, China

Shuliang Jiao

Florida International University, Department of Biomedical Engineering, Miami, Florida 33174, United States

Chuanqing Zhou

Shanghai Jiao Tong University, School of Biomedical Engineering, Shanghai 200240, China

J. Biomed. Opt. 19(9), 096012 (Sep 18, 2014). doi:10.1117/1.JBO.19.9.096012
History: Received June 27, 2014; Revised August 12, 2014; Accepted August 25, 2014
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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±1.25μm) was observed during maximum accommodation. In the 4mm×4mm 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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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Shanhui Fan ; Yong Sun ; Cuixia Dai ; Haihua Zheng ; Qiushi Ren, et al.
"Accommodation-induced variations in retinal thickness measured by spectral domain optical coherence tomography", J. Biomed. Opt. 19(9), 096012 (Sep 18, 2014). ; http://dx.doi.org/10.1117/1.JBO.19.9.096012


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