Fig. 6

3D reconstructed CT-DCG of a patient with distal severe nasolacrimal duct stenosis (Left Panel, C10 A-D). Note the blue images are with barium sulfate and the yellow ones with lipiodol. Reconstructed images of a patient with a complete post-saccal obstruction (Right Panel, C11 A-D). Compare the superiority of barium sulfate over lipiodol.