Abstract
Periphlebitis retinae in multiple sclerosis appears as transitory cellular infiltrations around veins in an otherwise normal retina. Similar cellular infiltrations have been found around veins in the central nervous system. In the present study the blood-retinal barrier has been investigated by vitreous fluorophotometry. Eight multiple sclerosis patients with actual periphlebitis retinae and 9 patients with previous but not active periphlebitis retinae were included in this study. Abnormal leakage of fluorescein was manifest in the group of multiple sclerosis patients with periphlebitis retinae. Permeability (1.8 +/- 0.2 X 10(-7) cm/sec; mean +/- SEM) but not in the control group as a whole permeability (1.3 +/- 0.1 X 10(-7) cm/sec; mean +/- SEM) compared to 17 normals (permeability 1.1 +/- 0.005). It is thus concluded that breakdown of the blood-retinal barrier may be transitory when connected with periphlebitis retinae in multiple sclerosis.
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