A relatively new option is Maqui Berries.
Delphinidin anthocyanins extracted from maqui berries (Aristotelia chilensis), indigenous to Chile, are rich in glucoside and sambubioside derivatives. They are known to help decrease glucose spikes after glucose intakes (see Ref 2). Some studies say it helps with dry eye, but it is unclear to me if the authors of the only clear study I could find have a finanical interest in Maqui Berries.
Also there is no randomized controlled, double blinded study to prove they work.
One patient of mine has tried it and notes (summarized): [it is still too early to say it helps but it was expensive to get the real berries and not just pills, which did not help. Also, apparently Dr. MASKIN had no opinion on maqui berry but said he
has had patients tell him it helps. I’m just getting purple teeth more than I had . Not sure in that will help but again it’s early so I will try it
and continue and see what happens Maybe I should take the pills I took one
bottle of pills it did not help but maybe I did not give it long enough. I speak my messages and don’t really edit them.]
It does not seem it would do any harm. But to say it restores meibomian gland function: does anyone out there want to sponsor the study?
Too early to say it restores gland function until it is properly studied.