The ophthalmic nerve, a sensory branch of the trigeminal nerve, supplies the eye’s structures—like the cornea and lacrimal ...

This type of evaluation can help define any nasal factors that may impact lacrimal drainage; these factors include nasal septal deviation, inferior turbinate impaction, polyps, tumors, etc.

However, the nasal mucosa is very sensitive and the flushing ... Only gentle pressure should be applied during irrigation to avoid rupture of the lacrimal sac; 3-ml syringes are usually sufficient ...