Fig. 3
From: Advances in the Understanding of ocular and nasal lymphatics
Two pathways for CSF drainage [1]. First nasopharyngeal lymphatic pathway: CSF originates from choroidal plexus (black arrow ①), passes through the cribriform plate into the nasopharyngeal lymphatic plexus (black arrow ③ ④), and drains into the deep cervical lymph nodes (black arrow ⑤) [2]. Second ocular lymphatic pathway: CSF originates from choroidal plexus(purple arrow), CSF influx (blue arrow), CSF-ISF exchange (blue gradient arrow), and finally drains into the deep cervical lymph nodes (green arrow). CSF, Cerebrospinal fluid; ISF, interstitial fluid