Nasolacrimal duct obstruction (NLDO) is a condition in which the nasolacrimal duct is blocked or closed, leading to difficulty in drainage of tears and mucus from the nose.
Causes of NLDO can include congenital anomalies, inflammatory processes (such as sinusitis), trauma, tumors, and scarring in the area of the nasolacrimal duct.
For the diagnosis of NLDO, a doctor may use X-rays, computed tomography, or special cameras for video monitoring of the patency of the nasolacrimal duct. Special tests with the passage of colored solution through the nasolacrimal duct may also be conducted.
Treatment of NLDO may include conservative methods (nasal massage, nasal irrigation), medical therapy, or surgical intervention to restore the patency of the nasolacrimal duct.
Prevention of NLDO includes timely treatment of inflammatory diseases of the nose and adjacent areas, as well as prevention of injuries and wound healing after surgeries.
NLDO is treated by an otolaryngologist (ENT doctor).