Fluorescein pattern of the choriocapillaris in the neonatal rhesus monkey

Seven neonatal rhesus monkeys were studied by serial fundus photography and fluorescein angiography at weekly intervals during the first 12 weeks of life. The neonatal rhesus showed little pigmentation of the fundus during the first six weeks of life. The fluorescein angiograms showed a definite sequential as well as segmental filling pattern at the level of the choriocapillaris. This filling pattern was based on individual units called lobules. In addition there was a segmental flow in the macula; that is, the nasal macula filled before the temporal macula.