Research on the liquid crystal adaptive optics system for human retinal imaging

Lei Zhang; Shoufeng Tong; Yansong Song; Xin Zhao

doi:10.1117/12.2037069

31 December 2013 Research on the liquid crystal adaptive optics system for human retinal imaging

Lei Zhang, Shoufeng Tong, Yansong Song, Xin Zhao

Proceedings Volume 9042, 2013 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 904213 (2013) https://doi.org/10.1117/12.2037069
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

The blood vessels only in Human eye retinal can be observed directly. Many diseases that are not obvious in their early symptom can be diagnosed through observing the changes of distal micro blood vessel. In order to obtain the high resolution human retinal images,an adaptive optical system for correcting the aberration of the human eye was designed by using the Shack-Hartmann wavefront sensor and the Liquid Crystal Spatial Light Modulator(LCLSM) .For a subject eye with 8m^-1 (8D)myopia, the wavefront error is reduced to 0.084 λ PV and 0.12 λRMS after adaptive optics(AO) correction ,which has reached diffraction limit.The results show that the LCLSM based AO system has the ability of correcting the aberration of the human eye efficiently,and making the blurred photoreceptor cell to clearly image on a CCD camera.

Citation Download Citation

Lei Zhang, Shoufeng Tong, Yansong Song, and Xin Zhao "Research on the liquid crystal adaptive optics system for human retinal imaging", Proc. SPIE 9042, 2013 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 904213 (31 December 2013); https://doi.org/10.1117/12.2037069

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KEYWORDS

Liquid crystals

Eye

Wavefronts

Adaptive optics

Molecules

Wavefront sensors

Imaging systems

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