Temporal properties study of ocular wave aberrations with high frequency sampling

	Temporal properties study of ocular wave aberrations with high frequency sampling
	Zheng X.; Liu R.; Xia M.; Li D.; Xuan L.
	2014
发表期刊	Guangxue Xuebao/Acta Optica Sinica
ISSN	ISBN/02532239
卷号	34 期号:7
摘要	Temporal properties of ocular wave aberrations are researched to improve the performance of eye aberration correction based on adaptive optical systems and the result for retinal imaging. Using a Shack-Hartmann wavefront sensor at a sampling rate of 330 Hz and exposure time of 3 ms, an optical system is constructed to detect human eye's wave aberration. The averaged root mean square (RMS) of detecting errors of the system is proved to be 0.01 by error analysis and an experiment on schematic eye. Detection results show that the existence of fluctuations of ocular wave aberration above 150 Hz can probably impact the performance of adaptive optics systems for wave aberration correction. These fluctuations can be reduced by increasing the detection and exposure times of the detector. In order to reach the diffraction limit, for eyes in the state of steady gaze, correction residual error RMS of adaptive optical system is less than /14, when detecting exposure time is 3 ms and detecting correction period is less than 45 ms. while the detecting correction period can increase to 62 ms as long as the exposure time is set to 6 ms. Analysis on tilt aberration proves that exposure time of high resolution retinal imaging should be less than 9 ms to avoid horizontal movements. Weighting the tradeoff between aberration fluctuation and horizontal movements, exposure times of detection and imaging are both set to about 6 ms.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44443
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zheng X.,Liu R.,Xia M.,et al. Temporal properties study of ocular wave aberrations with high frequency sampling[J]. Guangxue Xuebao/Acta Optica Sinica,2014,34(7).
APA	Zheng X.,Liu R.,Xia M.,Li D.,&Xuan L..(2014).Temporal properties study of ocular wave aberrations with high frequency sampling.Guangxue Xuebao/Acta Optica Sinica,34(7).
MLA	Zheng X.,et al."Temporal properties study of ocular wave aberrations with high frequency sampling".Guangxue Xuebao/Acta Optica Sinica 34.7(2014).

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