A macular carotenoid supplement with omega-3 raises scores in precision sports
1 study · 72 archers measured
The summary today
There is one study, and it is well built: randomised, double-blind, placebo-controlled, nine months of supplementation in competitive archers and target shooters in Singapore. The main result is in favour, but narrowly and across two sports taken together: the normalised score over sixty shots rises from 86.7 to 90.3 per cent in the active group and falls from 84.2 to 83.3 in the placebo group, a difference at the edge of significance (p = 0.047) and concentrated in the last two series of the test. In the archers alone, by contrast, the only precision measure does not move: group size does not differ between active and placebo (p = 0.712), and after nine months it widens slightly in both groups, from 76.4 to 87.3 millimetres on the supplement and from 104.0 to 108.0 on placebo, with eleven and ten archers per group. What changes clearly is in the body: blood lutein up 88 per cent, zeaxanthin up 107, skin carotenoids up 25, and better contrast sensitivity in dim light, while the athletes' own rating of their vision stays the same. In the archers sleep scores improve too. The study points two ways within itself: the score of archers and shooters goes up, the archers' group does not.
Also phrased as: "eye supplements and archery"; "lutein and zeaxanthin for archers"; "omega-3 and accuracy"; "macular pigment and score"; "supplements to see the target better"
In practice
In aiming sports there is growing talk of supplements for the eyes, on the idea that lutein, zeaxanthin and omega-3 help you see the target better in strong sun or poor light, and that this turns into points.
Evidence
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2026
For Archers Published later
Archers and target shooters taken together, 25 in the active group and 24 on placebo: after nine months the normalised score over 60 shots goes from 86.69 to 90.27 per cent with the supplement and from 84.21 to 83.34 on placebo (-0.87); interaction p = 0.047, partial eta squared 0.081. The figure is not broken down by sport.
The effect of macular carotenoids and omega-3 supplementation on performance in precision sports: the sport nutrition intervention in performance exercise (SNIPE) study · Parimala Sivaperuman, Fraser C. Horn, Warren Roche, James Stringham, Richard Swinbourne, John Nolan
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2026
For Archers Published later
The advantage appears in the final series: fifth series of ten shots p = 0.019 (eta squared 0.112), sixth p = 0.046 (0.082), the first four not significant. The placebo group's drop is concentrated in exactly those series, -6.11 and -3.12 per cent.
The effect of macular carotenoids and omega-3 supplementation on performance in precision sports: the sport nutrition intervention in performance exercise (SNIPE) study · Parimala Sivaperuman, Fraser C. Horn, Warren Roche, James Stringham, Richard Swinbourne, John Nolan
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2026
Against Archers Published later
In the archers alone, recurve and compound at 18 metres indoors: mean group size over 60 arrows goes from 76.4 to 87.3 millimetres in the active group (11 archers), and from 104.0 to 108.0 on placebo (10 archers); interaction p = 0.712. It is the only performance measure analysed in the archers alone.
The effect of macular carotenoids and omega-3 supplementation on performance in precision sports: the sport nutrition intervention in performance exercise (SNIPE) study · Parimala Sivaperuman, Fraser C. Horn, Warren Roche, James Stringham, Richard Swinbourne, John Nolan
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2026
Context Archers Published later
Aiming time does not change: on average from 7.39 to 7.61 seconds with the supplement and from 7.75 to 8.33 on placebo; interaction p = 0.723 (0.732 elsewhere in the paper).
The effect of macular carotenoids and omega-3 supplementation on performance in precision sports: the sport nutrition intervention in performance exercise (SNIPE) study · Parimala Sivaperuman, Fraser C. Horn, Warren Roche, James Stringham, Richard Swinbourne, John Nolan
-
2026
Context Archers Published later
The supplement does what it is meant to do in the body: blood lutein +88 per cent, zeaxanthin +107, meso-zeaxanthin from zero to 0.226 micromoles per litre, skin carotenoid score +25 per cent, all with p below 0.001.
The effect of macular carotenoids and omega-3 supplementation on performance in precision sports: the sport nutrition intervention in performance exercise (SNIPE) study · Parimala Sivaperuman, Fraser C. Horn, Warren Roche, James Stringham, Richard Swinbourne, John Nolan
-
2026
Context Archers Published later
In archers and shooters contrast sensitivity at 6 cycles per degree in dim light improves in the dominant eye (p = 0.008, eta squared 0.141), visual acuity does not; the athletes' own rating of their vision stays the same.
The effect of macular carotenoids and omega-3 supplementation on performance in precision sports: the sport nutrition intervention in performance exercise (SNIPE) study · Parimala Sivaperuman, Fraser C. Horn, Warren Roche, James Stringham, Richard Swinbourne, John Nolan
-
2026
Context Archers Published later
In the archers the sleep health score rises from 8.45 to 9.91 with the supplement and falls from 9.20 to 8.60 on placebo (interaction p = 0.023, partial eta squared 0.242), starting from values that were already good; in the shooters there is no effect (p = 0.705).
The effect of macular carotenoids and omega-3 supplementation on performance in precision sports: the sport nutrition intervention in performance exercise (SNIPE) study · Parimala Sivaperuman, Fraser C. Horn, Warren Roche, James Stringham, Richard Swinbourne, John Nolan
-
2026
Context Archers Published later
At baseline all three groups of athletes, archers included, took in less than the recommended 6 milligrams a day of lutein and zeaxanthin from their diet, and had skin carotenoids in the moderate range. The archers reported about three hours a day of outdoor training.
The effect of macular carotenoids and omega-3 supplementation on performance in precision sports: the sport nutrition intervention in performance exercise (SNIPE) study · Parimala Sivaperuman, Fraser C. Horn, Warren Roche, James Stringham, Richard Swinbourne, John Nolan
Status history
- 2025 Not studied That macular carotenoids protect the retina and sharpen contrast vision is an idea from vision research, but nobody has yet taken it to the target: the registry holds no study measuring the scores of archers or shooters with and without a supplement.
- 2026 Contested The randomised, double-blind, placebo-controlled trial arrives: nine months, archers and shooters in Singapore. The score of archers and shooters taken together rises from 86.7 to 90.3 per cent with the supplement and dips slightly on placebo (p = 0.047), with the advantage in the last two series. In the archers alone, though, the arrow group does not tighten (p = 0.712), and aiming time does not change. Blood and skin carotenoids rise, as do contrast sensitivity in dim light and, in the archers, sleep scores. There is one study, but its results point two ways: contested.
Related
Related articles
Research lines
Cite
Campagna, M. (2026). A macular carotenoid supplement with omega-3 raises scores in precision sports (Version 2). In Evidence Registry. Retrieved 16 October 2026, from https://matteocampagna.com/en/registry/health/macular-carotenoids-omega-3-score
@misc{campagna2026_carotenoidiomega3punteggio,
author = {Campagna, Matteo},
title = {A macular carotenoid supplement with omega-3 raises scores in precision sports},
year = {2026},
howpublished = {Evidence Registry, matteocampagna.com},
url = {https://matteocampagna.com/en/registry/health/macular-carotenoids-omega-3-score},
note = {Version 2; accessed 2026-10-16}
}
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