There is always new research on what is the best food or vitamin to prevent worsening of macular degeneration.
While this study touts a particular combination, it is important to remember prevention is worth more than all the best vitamins combined.
If you smoke, do not use sunglasses, or eat an inflammatory-inducing diet instead of green leafy veggies, these vitamins may not help as much compared to those who make macula-protective decisions.
Here is the paper. I do not see drug company involvement/money on the front page but have not read full article so will let you know if there is.
Here are the key points of the paper entitled
Sustained supplementation and monitored response with differing carotenoid formulations in early age-related macular degeneration.
1. Supplementation with antioxidants that include the macular carotenoids has been shown to benefit patients with non-advanced AMD.[1]
2. A recent randomized, clinical trial has shown that a formulation containing all three macular carotenoids L=Lutein, MZ=Meso-Zeaxanthin, Z=Zeaxanthin (in L:MZ:Z [mg] ratio of 10:10:2; MacuHealth with LMZ3 and MacuHealthPlus+ ) outperforms a MZ-deficient formulation in patients with non-advanced AMD, both in terms of visual improvements and in terms of observed increases in macular pigment.[2]
3. Non-advanced age-related macular degeneration (AMD) does not profoundly affect vision, but is associated with gradual but relentless visual decline and, in many cases, progression to advanced and blinding AMD (atrophic and/or neovascular).
http://www.ophthalmologymanagement.com/getattachment/5efef2fc-b3e4-4311-a9b5-c55b0c292b7f/cover.jpg?width=167&resizemode=force
1. Chew, E.Y., et al., Secondary analyses of the effects of lutein/zeaxanthin on age-related macular degeneration progression: AREDS2 report No. 3. JAMA Ophthalmol., 2013. 132: p. 142-149.
2. Akuffo, K.O., et al., Sustained supplementation and monitored response with differing carotenoid formulations in early age-related macular degeneration. Eye (Lond). 2015: p. 10.