There may be a visible bump or fullness at the inner corner of the eye, near the bridge of the nose.
"Radiological imaging (Dacryocystography) reveals a sudden cessation of contrast medium flow within the nasolacrimal duct, typically located at the valve of Hasner. Proximal to the obstruction, the duct appears dilated (dacryocystocele) due to fluid accumulation, while the distal segment remains unfilled." picture of blocked tear duct in adults