Identification of endogenous flurophores in the layered retina

Gaixia Xu; Danni Chen; Yiwen Sun; Junle Qu D.D.S.; Ziyang Lin; Zhihua Ding; Hanben Niu

doi:10.1117/12.741574

10 May 2007 Identification of endogenous flurophores in the layered retina

Gaixia Xu, Danni Chen, Yiwen Sun, Junle Qu D.D.S., Ziyang Lin, Zhihua Ding, Hanben Niu

Proceedings Volume 6534, Fifth International Conference on Photonics and Imaging in Biology and Medicine; 65341O (2007) https://doi.org/10.1117/12.741574
Event: Fifth International Conference on Photonics and Imaging in Biology and Medicine, 2006, Wuhan, China

Abstract

In this paper, we measured and analyzed the characteristic of endogenous fluorophores in porcine layered retina by using advanced fluorescence spectroscopy and microscopy imaging technology. It was found that there were obvious contrasts corresponding to the different layers of retina, which may be important for fundus disease diagnosis. The retinal pigment epithelium cells exhibited strong autofluorescence with as emission peak of 600±10nm when excited with 860-nm light. The emission peak of photoreceptors was at 652±5nm, and the emission peak of retinal vessels layer was weak and at 640~700nm, when excited with 488-nm light. Autofluorescence images of three layers of retina were obtained using the same setup. We concluded that the main endogenous fluorophore in PRE was lipofuscin and that in retinal vessels was porphyrin. What's more, the FMHW (full width at half. maximum) of retinal fluorescence spectrum was broad, which suggested that there wasn't only one endogenous fluorophores of tissues excited.

Citation Download Citation

Gaixia Xu, Danni Chen, Yiwen Sun, Junle Qu D.D.S., Ziyang Lin, Zhihua Ding, and Hanben Niu "Identification of endogenous flurophores in the layered retina", Proc. SPIE 6534, Fifth International Conference on Photonics and Imaging in Biology and Medicine, 65341O (10 May 2007); https://doi.org/10.1117/12.741574

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KEYWORDS

Retina

Luminescence

Blood vessels

Confocal microscopy

Tissues

Microscopy

Multiphoton microscopy

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