Video fluorescein dynamics in rat retinal vessels.

<p><b>A</b>. Representative intensity profile for an individual pixel before (grey trace) and after PCA (green trace). <b>B</b>. Representative normalized fluorescein intensity profile as a function of time in an artery (red), vein (blue) and capillary/choroid (green). Parameters used to analyze fluorescence profiles include the half-rise, half-fall and offset amplitude.