What is CamuCamu?

A recent discussion about glaucoma and other eye problems with Dr. Heidi* brought up the ingredient CamuCamu ( Myrciaria dubia ) where she comments,

Two of the ingredients in both Pops – Camucamu (source of Vitamin C) and alpha lipoic acid are said to help with glaucoma. The bilberries and blueberries in the Purples are [...]