The Study
Long term effects of lutein, zeaxanthin and omega-3-LCPUFAs supplementation on optical density of macular pigment in AMD patients: the LUTEGA study
This study gave people with a type of eye disease a special vitamin pill and found that after a year, their eyes showed some improvement in a lab test. But it didn't prove the pill stops their vision from getting worse in the long run — just that it helped a little in the short term.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
This study tested if taking a daily pill with special eye vitamins helps slow down vision loss in older people with early-stage macular degeneration.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 571 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1The improvements were real and measurable, but it's not yet clear if they prevent blindness or just temporarily help vision.
- 2People who took the vitamins had higher eye pigment levels and saw better on eye charts after 12 months; doubling the dose didn't help more.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Graefe's Archive for Clinical and Experimental Ophthalmology
Year
2013
Authors
J. Dawczynski, S. Jentsch, D. Schweitzer, M. Hammer, G. Lang, J. Strobel
Related Content
Claims (6)
Taking a specific combination of lutein, zeaxanthin, DHA, EPA, and antioxidants daily for one year increases the density of protective pigment in the macula of people with non-exudative age-related macular degeneration. Doubling the dose does not increase this pigment further.
Taking lutein, zeaxanthin, omega-3 fatty acids, and antioxidants together for 12 months increases the density of protective pigment in the macula and improves sharpness of vision in people with non-exudative age-related macular degeneration.
Taking a daily supplement containing lutein, zeaxanthin, omega-3-LCPUFAs, and antioxidants for one year leads to measurable improvement in sharpness of vision in people with non-exudative age-related macular degeneration compared to taking a placebo.
In people with non-exudative age-related macular degeneration who do not take supplements, the density of macular pigment decreases over 12 months. Daily nutrient intake is associated with a reduction in this decline.
Taking lutein and zeaxanthin supplements at the studied dose leads to a maximum level of pigment in the macula; doubling the dose does not increase this pigment further.
Lutein and zeaxanthin build up in the central part of the retina and absorb blue light, which reduces damage to light-sensitive cells.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.