Great to have you hear and here. I'm so curious with your Daime roots in Acre and your experiences. I myself am in the line of CEFLI (although I have to wait until they come to the states again to receive my star in person) and am ever wanting to dive in head first to the crystal clear line. Did you spend time or visit Alto Santo?
I think if you search Sananga on either google search or here it will term up lots of links. I've been using it for almost 2 years now on a semi regular basis. I sometimes take long periods off and only use it before Kambo, during Iboga, during/after Aya/Daime. I have to be careful because it strengthens my third eye too much to where it can feel like intense spiritual pressure. Sananga is really a spiritual medicine of gentle restarts even though it is mainly known for hunting and healing vision.
You can use it even 3 times a day for weeks at a time. I learned this because a friend in the Daime did this for months and it only brought the medicine more power and development for the soul/eyes.
It's used for every eye ailment. Who knows if scientists will ever study it or why the alkaloids help the eyes. The nexus as always has the most science on Sananga...
https://www.dmt-nexus.me/forum/default.aspx?g=posts&t=33633