Fig. 1 | Nature Communications

Fig. 1

From: Non-invasive in vivo hyperspectral imaging of the retina for potential biomarker use in Alzheimer’s disease

Fig. 1

Principle of retinal hyperspectral (HS) imaging. In HS imaging a narrow bandwidth tunable light source illuminates the retina and the reflected light from the retina is collected by an image sensor. The different frames of the hyperspectral reflectance cube are obtained by scanning the source wavelengths. Therefore, each HS image has both spatial and spectral information, i.e., each spatial locus has an associated spectrum when viewed across the available wavelengths. NIR = near-infra-red

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