Formulating Eye Health Supplements for the Digital Age

The traditional paradigm of the eye health category is undergoing a fundamental transformation. Historically focused on reactive solutions for aging populations and disease risk reduction, the industry is shifting toward proactive, systems-based formulations designed for a digital-first society. Modern lifestyles are characterized by digital exposure impacting consumers across multiple life stages, generating needs related to visual fatigue, cognitive performance, and sleep disruption.

Consequently, leading ingredient suppliers are repositioning eye health through the lens of "neuronutrition" and the eye-brain axis while offering lifestyle-first formats to support a foundation for lifelong eye health and visual performance.

This FAQ explores how recent clinical research into macular carotenoids, astaxanthin, and bilberry anthocyanins supports this holistic paradigm. For a deep dive into the shift in eye health, read the feature article A New Frontier in Eye Health: Digital Wellness, Bioavailability, and the Eye-Brain Connection.

How Do Ingredients Such as Lutein, Zeaxanthin, Astaxanthin, and Bilberry Anthocyanins Support Eye Health?

The human retina is constantly exposed to light. Carotenoids—specifically lutein, zeaxanthin, and meso-zeaxanthin—are present in the retina, forming the macular pigment (MP).¹ This pigment acts as a biological pair of "internal sunglasses," absorbing blue light and protecting the underlying photoreceptor layer from light-induced damage. Clinical research demonstrates that targeted supplementation with these carotenoids increases macular pigment optical density (MPOD), which enhanced contrast sensitivity and lateral inhibition in young adults.^2,3

Meanwhile, astaxanthin, a unique marine-derived xanthophyll carotenoid, operates primarily as an antioxidant that improves visual regulatory function and reduces oxidative damage.⁴ It has been shown in clinical trials to improve retinal capillary blood flow around the optic disc.

Anthocyanins derived from bilberry (Vaccinium myrtillus) similarly support ocular function; clinical evidence indicates that oral bilberry anthocyanins help inhibit the decline of pupillary accommodative function induced by acute visual fatigue caused by prolonged screen time use.⁵

How Does Screen Time Affect Eye Health?

Prolonged exposure to visual display terminals (VDTs), such as smartphones, tablets, and computers, subjects the eyes to sustained accommodative focus and continuous blue light emission. This environment induces significant oxidative stress in ocular tissues, leading to ciliary muscle fatigue and transient losses in visual acuity.^4,5 Individuals with high screen time exposure frequently report a cluster of adverse physical symptoms, which includes eye strain, eye fatigue, and frequent headaches.⁶

What Does Research Say About the Need for Eye Health Support in Younger Age Groups?

While historical eye health strategies focused primarily on preventing age-related macular degeneration in older populations, contemporary research shows a crucial need for ocular support in younger demographics. Modern digital lifestyle habits begin in childhood, exposing the developing adolescent retina to unprecedented levels of screen time.

A recent randomized controlled trial involving pre-teens and teenagers (ages 8–16) with high daily screen time revealed that a daily lutein formulation resulted in a 14% increase in macular pigment density compared to a placebo.⁷ Furthermore, clinical trials young adults (ages 18–30) confirm that supplementing with macular carotenoids consistently increases MPOD.²

How Does Eye Health Relate to Sleep and Brain Health?

The implications of eye health ingredients extend beyond the visual pathway to influence systemic health, particularly sleep quality and cognitive performance. Blue light exposure can suppress melatonin and disrupt sleep cycles. In a clinical trial, macular carotenoid supplementation was linked improved sleep quality.⁶ In this case, this sleep optimization is thought to be driven by a systemic reduction in inflammation and oxidative stress rather than direct changes in retinal pigment density.

Furthermore, lutein and zeaxanthin are the dominant carotenoids in human retina and neural tissues.⁸ Higher concentrations of these carotenoids are strongly associated with improved neuroprotection, neurotransmission, and cognitive functions—such as memory and reasoning—in various age groups.^2,9

This article was created with assistance from AI. The content has been reviewed and edited by Erin McEvoy, Associate Editor. For more information on the extent and nature of AI usage, please contact us.

References

1. Krinsky NI, Landrum JT, Bone RA. Biologic mechanisms of the protective role of lutein and zeaxanthin in the eye. Annu Rev Nutr. 2003;23:171-201. doi:10.1146/annurev.nutr.23.011702.073307
2. Renzi-Hammond LM, Bovier ER, Fletcher LM, et al. Effects of a lutein and zeaxanthin intervention on cognitive function: a randomized, double-masked, placebo-controlled trial of younger healthy adults. Nutrients. 2017;9(11):1246. doi:10.3390/nu9111246
3. Stringham JM, O’Brien KJ, Stringham NT. Contrast sensitivity and lateral inhibition are enhanced with macular carotenoid supplementation. Invest Ophthalmol Vis Sci. 2017;58(4):2291-2295. doi:10.1167/iovs.16-21087
4. Sekikawa T, Kizawa Y, Li Y, Miura N. Effects of diet containing astaxanthin on visual function in healthy individuals: a randomized, double-blind, placebo-controlled, parallel study. J Clin Biochem Nutr. 2023;71(1):74-81. doi:10.3164/jcbn.22-65
5. Sekikawa T, Kizawa Y, Takeoka A, Sakiyama T, Li Y, Yamada T. The effect of consuming an anthocyanin-containing supplement derived from bilberry (Vaccinium myrtillus) on eye function: a randomized, double-blind, placebo-controlled parallel study. Funct Foods Health Dis. 2021;11(3):116. doi:10.31989/ffhd.v11i3.782
6. Stringham JM, Stringham NT, O’Brien KJ. Macular carotenoid supplementation improves visual performance, sleep quality, and adverse physical symptoms in those with high screen time exposure. Foods. 2017;6(7):47. doi:10.3390/foods6070047
7. Fonseca B. The impact of lutein on macular pigment density in healthy adolescents: a randomized controlled trial. Invest Ophthalmol Vis Sci. 2025;66(8):1013.
8. Renzi LM, Hammond BR, Jr. The relation between the macular carotenoids, lutein and zeaxanthin, and temporal vision. Ophthalmic and Physiological Optics. 2010;30(4): 351-357. doi:10.1111/j.1475-1313.2010.00720.x
9. Buscemi S, Corleo D, Di Pace F, Petroni ML, Satriano A, Marchesini G. The effect of lutein on eye and extra-ocular health. Nutrients. 2018;10(9):1321. doi: 10.3390/nu10091321