Ophiocordyceps unilateralis
https://en.wikipedia.org/wiki/Ophiocordyceps_unilateralis
Also:
Loa loa
https://en.wikipedia.org/wiki/Loa_loa#:~:text=Loa%20loa%20is%20a%20filarial%20%28arthropod%20-borne%29%20nematode,it%20localizes%20to%20the%20conjunctiva%20of%20the%20eye.