But if a bear wakes you up in the middle of the night, it's pretty helpful to have your eyesight maintained, even while sleeping, in order to just wake up and go
Then we need more studies starting 50 years ago at least. Regardless, placebo is a thing. We give pain meds all the time knowing they do next to nothing with minimal side effects, give the girls some oxy, or robaxin, or fentanyl. Those are the easiest drugs for me to ask a doctor to prescribe for pain, and having a 1 time dose in a doctor's office will not make you an addict.
Interesting ethical dilemma: everyone loses someone they love to a mosquito borne illness, thus motivating the human race to quickly eliminate them, ultimately saving more people than if we didn't all lose a loved one at once.
Conjunctivitis