The ability to see in poor light depends on the presence of a substance in the eye called rhodopsin, or visual purple. It is destroyed by bright light but rapidly regenerates in the dark. However, for some people, the adaptation to darkness or the recovery from glare takes an unusually long time. The herb bilberry, a close relative of the American blueberry, is the most commonly mentioned natural treatment for impaired night vision. The active components of bilberry, called anthocyanosides, are powerful antioxidants, which help repair tissue and strengthen blood vessels. Studies have shown that bilberry may prevent cataracts and help treat age-related macular degeneration and the eye damage that occurs in some people with diabetes (diabetic retinopathy). Anthocyanosides also enhance the function of a compound in the eye that is responsible for night vision. British World War II pilots reported improved night vision after eating bilberries. Bilberry (400 mg) is one of the ingredients of Eye Combo from Nepatica. The other ingredients are Ginkgo biloba (100 mg), Grape seed (100 mg), Tomato (100 mg) and Lutein (5 mg). Read more!