Conjunctivitis travels, I get this a lot and the pharmacist told me to put something like a heated gelpack on eyes.It clears up really well.Clean each eye with a fresh damp cotton wool pad using boiled water ( let it cool down first!) then sit back with the warm gel pack over the eyes.You can buy them online, it’s like a small eye mask, or the optician sells them.
Or...you can use the warm lavender things that you heat in the microwave.