Adaptive optics two-photon excited fluorescence lifetime imaging ophthalmoscopy of exogenous fluorophores in mice

JA Feeks, JJ Hunter - Biomedical Optics Express, 2017 - opg.optica.org
JA Feeks, JJ Hunter
Biomedical Optics Express, 2017opg.optica.org
In vivo cellular scale fluorescence lifetime imaging of the mouse retina has the potential to
be a sensitive marker of retinal cell health. In this study, we demonstrate fluorescence
lifetime imaging of extrinsic fluorophores using adaptive optics fluorescence lifetime imaging
ophthalmoscopy (AOFLIO). We recorded AOFLIO images of inner retinal cells labeled with
enhanced green fluorescent protein (EGFP) and capillaries labeled with fluorescein. We
demonstrate that AOFLIO can be used to differentiate spectrally overlapping fluorophores in …
In vivo cellular scale fluorescence lifetime imaging of the mouse retina has the potential to be a sensitive marker of retinal cell health. In this study, we demonstrate fluorescence lifetime imaging of extrinsic fluorophores using adaptive optics fluorescence lifetime imaging ophthalmoscopy (AOFLIO). We recorded AOFLIO images of inner retinal cells labeled with enhanced green fluorescent protein (EGFP) and capillaries labeled with fluorescein. We demonstrate that AOFLIO can be used to differentiate spectrally overlapping fluorophores in the retina. With further refinements, AOFLIO could be used to assess retinal health in early stages of degeneration by utilizing lifetime-based sensors or even fluorophores native to the retina.
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