From: Two-Photon Autofluorescence Imaging Reveals Cellular Structures Throughout the Retina of the Living Primate Eye Invest. Ophthalmol. Vis. Sci.. 2016;57(2):632-646. doi:10.1167/iovs.15-17961 Figure Legend: (a) Reflectance image of an artery close to the optic disk, and (b) the corresponding two-photon fluorescence image collected at the same location. Fluorescence from bright granular structures can be seen within the vessel wall in (b). Two-photon imaging conditions: power at the cornea, 7 mW; scan size, 1.5° × 1.54°; duration of recording, 19,200 frames (873 seconds); exposure, 4598 J/cm2. Exposure was greater than MPE by a factor of 8.6. Scale bars: 50 μm. Date of download: 11/15/2017 The Association for Research in Vision and Ophthalmology Copyright © 2017. All rights reserved.