Euphrasia officinalis, more commonly known as Eyebright, has been used as an herbal eye treatment in some cultures for centuries. Despite its long history, Eyebright has not been evaluated for safety by the Food and Drug Administration.
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Safety
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According to veterinarians Shawn Messonnier, Steve Marsden and Cheryl Yuill, euphrasia is a benign herb and is probably safe for most species.
Research
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There are no official studies reporting on the effectiveness or safety of treating eye irritation in dogs with Eyebright. As a result, all potential health benefits or safety issues might not be known. Evidence of effectiveness comes primarily from reported use.
Production
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The production of Eyebright is not regulated, so contamination is a possibility. Users should purchase sealed containers from trusted vendors.
Application
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Dr. Shawn Messonnier suggests dropping Eyebright directly into the eye. It can also be applied as a compress.
Side Effects
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Eyebright can cause side effects such as increased eye pressure, watering, redness, itching and swelling of the eye. Other allergic reactions are possible.
Caution
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Eyebright is not recommended for internal use.
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