This paper is an attempt to establish a relationship between visual field defects, ie, unilateral (orbit), bitemporal (chiasm), homonymous hemianopic (retrochiasmatic visual pathway), and the results of roentgenologic examination consisting of plain methods on the one hand and of the contrast medium techniques on the other. The conclusion is that roentgenologic diagnosis has become an indispensable tool not only for localizing a lesion of the visual pathway but also for determining its nature and extension.