Contaminated water source and food with rat urine is a probable route for this infection,
Parasites Chilomastix cysts (rat) 2500 (sq 1393 2045-1 3373 3889-5 3907 3890 4260 4252 4273) Hz
in the eye sockets this parasite affect vision. This is of the those frequencies that work immediately, if the infection is present.
Good luck.