According to research findings, different zones within the macula have lutein, zeaxanthin, and meso-zeaxanthin, exclusively, suggesting unique roles. It is unclear whether dietary uptake of meso-zeaxanthin or its conversion from zeaxanthin within the eye is its natural source. How important is taking meso-zeaxanthin along with zeaxanthin as a supplement for eye health?

We see these as two separate issues of interest to scientists but not of practical importance, because we can tell you that taking exogenous meso-zeaxanthin will add to the accumulation within the eye in beneficial ways. So having it present in the supplement will add something useful.