Additional Supporting Information may be found in the online version of this article.

DVDY_21886_sm_SuppMovieS1.avi4842KSupp. Movie 1. Live imaging of P0 pupillary membrane blood flow in Flk1-myr::mCherry+/tg;ϵ-globin-KGFP+/tg mice. Imaging speed is 30 frames per second (fps). Objective used: Zeiss Plan-Apochromat 20×/0.75 NA.
DVDY_21886_sm_SuppMovieS2.mov5469KSupp. Movie 2. Demonstration of the cell-tracking function provided by the Imaris software. For ease of viewing individual tracks, the movie play speed was slowed.
DVDY_21886_sm_SuppMovieS3.avi2712KSupp. Movie 3. Fifty-micrometer three-dimensional stack through the entire thickness of the P15 Flk1-myr::mCherry retinal vasculature. Objective used: Zeiss Plan-Apochromat 20×/0.75 NA.

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