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Bilberry May Improve Tear Flow in People with Dry Eye

Dry eye disease affects the surface of the eye and cause discomfort, inflammation, disturb a person’s vision, and even cause damage to the surface of the eye. A recent study suggests that taking a bilberry extract may help improve tear flow in people who suffer from dry eye.


Participants in the study included 22 people with dry eye. Over the course of four weeks, they were given either a bilberry extract or a placebo daily. The researchers performed ophthalmological and clinical examinations in order to measure dry eye and they also measured antioxidant levels at the beginning and end of the study.


At the conclusion of the study, the researchers noted increased tear production in the bilberry extract group, but not in the placebo group. Upon closer examination, they found that the effect was stronger in people with a greater tendency toward dry eye. They also noted a significant improvement in biological antioxidant potential in the bilberry group, when compared with the placebo group.


Researchers from Indena SpA in Milan, Italy, conducted the study. It was published in the May 2017 issue of European Review for Medical and Pharmacological Sciences.


Previous studies suggests that bilberries may help with diarrhea, mouth and throat irritation, fight inflammation, manage blood sugar and cholesterol levels, and help with circulation in people with diabetes.


Bilberries are a fruit that can be eaten fresh, but for supplement purposes the fruit and leaves are usually dried. It can be taken in supplement form.

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