Bilberry extract, along with Fish Oils and Lutein improve eye fatigue
Asthenopia sounds serious but it is just the scary medical term for eyestrain. This occurs when you overuse your eyes and they are fatigued so the obvious symptoms would be tired eyes, tearing, red eyes, blurry vision and discomfort of the eye. Some people develop eye-strain related headaches.
In this study Japanese researchers supplemented healthy subjects suffering with asthenopia with Fish Oils (predominantly as DHA but also with EPA), Lutein and Bilberry extract or look alike placebo for four weeks. Asthenopia symptoms were improved in the supplemented group versus the placebo group and their mental fatigue also improved. The study is published in the journalBiomedical Research 2011;32(6)