Bar-Noam, A. S., Farah, N. & Shoham, S. Correction-free remotely scanned two-photon in vivo mouse retinal imaging. Light: Science & Applications, 5, e16007 (2016).
DOI:
Bar-Noam, A. S., Farah, N. & Shoham, S. Correction-free remotely scanned two-photon in vivo mouse retinal imaging. Light: Science & Applications, 5, e16007 (2016). DOI: 10.1038/lsa.2016.7.
Correction-free remotely scanned two-photon in vivo mouse retinal imaging
Non-invasive fluorescence retinal imaging in small animals is an important requirement for an array of translational vision applications. The
in vivo
two-photon imaging of the mouse retina may enable the long-term investigation of the structure and function of healthy and diseased retinal tissue. However
to date
this has only been possible using relatively c
omplex adaptive-optics systems. Here
the optical modeling of the murine eye and of the imaging system is used to achieve correction-free two-photon microscopy through the pupil of a mouse eye to yield high-quality
optically sectioned fundus images. By remotely scanning the focus using an electronically tunable lens
high-resolution three-dimensional fluorescein angiograms and cellular-scale images are acquired
thus introducing a correction-free baseline performance level for two-photon
in vivo
retinal imaging. Moreover
the system enables functional calcium imaging of repeated retinal responses to light stimulation using the genetically encoded indicator
GCaMP6s. These results and the simplicity of the new add-on optics are an important step toward several structural
functional
and multimodal imaging applications that will benefit from the tight optical sectioning and the use of near-infrared light.
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