28 October 2009 Multiwavelength adaptive optical fundus camera and continuous retinal imaging
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We have constructed a new version of retinal imaging system with chromatic aberration concerned and the correlated optical design presented in this article is based on the adaptive optics fundus camera modality. In our system, three typical wavelengths of 550nm, 650nm and 480nm were selected. Longitude chromatic aberration (LCA) was traded off to a minimum using ZEMAX program. The whole setup was actually evaluated on human subjects and retinal imaging was performed at continuous frame rates up to 20 Hz. Raw videos at parafovea locations were collected, and cone mosaics as well as retinal vasculature were clearly observed in one single clip. In addition, comparisons under different illumination conditions were also made to confirm our design. Image contrast and the Strehl ratio were effectively increased after dynamic correction of high order aberrations. This system is expected to bring new applications in functional imaging of human retina.
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Han-sheng Yang, Han-sheng Yang, Min Li, Min Li, Yun Dai, Yun Dai, Yu-dong Zhang, Yu-dong Zhang, "Multiwavelength adaptive optical fundus camera and continuous retinal imaging", Proc. SPIE 7519, Eighth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2009), 751910 (28 October 2009); doi: 10.1117/12.846076; https://doi.org/10.1117/12.846076

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