Fluorescein appearance time curves. Continuous recordings of iris and anterior chamber dye flow contours.
Fluorescein appearance time (FAT) curves were recorded at 5-s intervals from the feline iris and anterior chamber using a modified video-frame store unit. Anterior chamber washout slopes were also recorded following intracameral injection. The iris FAT interval following intravenous injection was maximally 5 s. Passage of the dye bolus then appeared during the next 10 s, followed by a rapid (100-s) rise to maximum levels. In contrast to the iris, anterior chamber FAT curves recorded from the pupillary space showed an approximate two-minute delay after injection (mean = 1.92 +/- 0.360 minutes), followed by a gradual (20-minute) rise to maximum recordable levels. The mean anterior chamber washout rate following intracameral injection of 10(-6) g/mL of dye levels was 2.323% +/- 0.810%/min. There are potential applications of the method and a need for shorter recording intervals.
D000818:Animals; D000867:Anterior Chamber / Q000378:metabolism*; D002415:Cats; D003201:Computers; D019793:Fluorescein; D005452:Fluoresceins / Q000378:metabolism*; D007498:Iris / Q000378:metabolism*; D014743:Videotape Recording / Q000379:methods*
D005452:Fluoresceins; D019793:Fluorescein