Keytruda is given by intravenous (IV) infusion every 3 weeks until disease progression, unacceptable toxicity, or up to 24 months. It is currently a non-preferred brand, specialty medication on standard NPS formularies and carries an average wholesale price (AWP) of $515.79 per day. FDA Safety Update
Tears come from the lacrimal gland. And it's found in the outer part of the upper eye. When excess tears are produced, they drain into small ducts to the nasal cavity. And if you have too many tears to drain, they'll spill out of your eyes. There's an anatomical reason why crying makes your nose run.
Dacryocystitis is an infection in the tear drainage system. Tears drain from each eye through small canals, a tear sac (lacrimal sac) and a tear duct (nasolacrimal duct). Tears are made by a small organ above the eye under the upper lid. At the inner corner of each upper and lower eyelid is an opening to a small tube (drainage canal).