June 2013
Volume 54, Issue 15
Free
ARVO Annual Meeting Abstract  |   June 2013
Accommodation induced variations of ocular axial length and retinal thickness measured with SD-OCT
Author Affiliations & Notes
  • Chuanqing Zhou
    Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
  • Shanhui Fan
    Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
  • Zhe Chen
    Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
  • Xinyu Chai
    Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
  • Footnotes
    Commercial Relationships Chuanqing Zhou, None; Shanhui Fan, None; Zhe Chen, None; Xinyu Chai, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science June 2013, Vol.54, 4263. doi:
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    • Get Citation

      Chuanqing Zhou, Shanhui Fan, Zhe Chen, Xinyu Chai; Accommodation induced variations of ocular axial length and retinal thickness measured with SD-OCT. Invest. Ophthalmol. Vis. Sci. 2013;54(15):4263.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: To measure and analyze the variations of the ocular axial length and retinal thickness during ocular accommodation by spectral domain optical coherence tomography (SD-OCT).

Methods: A custom-built dual channel SD-OCT was developed for measurement of the ocular axial length and retinal imaging. The scans were performed by the same experienced operator. All eyes were studied in the relaxed and 5D accommodated states. During the imaging, the subjects were asked to fixate on a Maltsecross visual target and to see it clearly. The thickness between ILM and RPE and its change caused by accommodation was calculated based on the acquired image.

Results: Repeated measurements were taken in each accommodative state. Compared with relaxed state (0D), the mean thickness variation around the central fovea was 7.4957±8.3616 μm at 5D accommodation. In further study, we will collect more data to analyze the variations of axial length and retinal thickness.

Conclusions: Preliminary result showed that the thickness between ILM and RPE in macular has a slight change during accommodation.

Keywords: 404 accommodation • 688 retina • 552 imaging methods (CT, FA, ICG, MRI, OCT, RTA, SLO, ultrasound)  
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