Pink eye is easily cured with a 50/50 solution of raw unpasteurized unfiltered honey and distilled water administered as eye drops three times a day. It should be gone within 24 hours. That’s been my experience.
I was given some kind of eye drops that I used a couple times.
It went away on its own in 2 days.
The drop hurt because I went contests so I skipped them.
I saved the bottle in case the dogs ever need such a thing.
;)