I looked on wiki and saw that it was not used for eye drops maybe, but i think it to help for hunting because it says When applied directly to the eye, Becchete has the effect of giving the environment greater texture and dimension, making it easier to spot animals during hunting. This seems really interesting, i couldn't imagine rubbing something on my eye, very sweet and crazy.
it also says The effects are reported to be long-term, lasting days or weeks, not just a few hours.
I Don't know exactly how i could guide you with this plant, id say wait and see if others respond in, if they have tried it or even played around with the plant.
I wish you luck and please be safe.
"You are an explorer, and you represent our species, and the greatest good you can do is to bring back a new idea, because our world is endangered by the absence of good ideas. Our world is in crisis because of the absence of consciousness."
— Terence McKenna
"They Say It helps when you close yours eyes cowboy"