In this method, the surgeon uses an endoscope inserted through the nasal opening to the duct system to create an alternative route for the drainage of tears between the lacrimal sac and nasal cavity. This method requires no incision so leaves no scar. In this surgical technique, a direct passage is opened for draining tear from lacrimal sac into nasal cavity, and the obstructed section of the nasolacrimal duct is diverted to the nose. It is worth noting that acquired nasolacrimal duct obstruction is a fairly common problem.