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  Indian J Med Microbiol
 

Figure 3: Computerized tomography dacryocystography showing (a) No flow of contrast in left nasolacrimal duct (b) Screw anterior to the left nasolacrimal duct impinging on it

Figure 3: Computerized tomography dacryocystography showing (a) No flow of contrast in left nasolacrimal duct (b) Screw anterior to the left nasolacrimal duct impinging on it