Dry Eye Syndrome Responds to Sea Buckthorn Treatment

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2010-06-30 12:57

The oil from sea buckthorn, a plant that grows in the mountains of China and Russia, and also in Canada, can reduce symptoms of dry eye syndrome. Scientists from the University of Turku report that sea buckthorn oil also improved symptoms for people who wear contact lens.

Dry eye syndrome, or keratoconjunctivitis sicca, is a condition in which the eyes to nod produce enough tears or the tears evaporate too quickly. This leaves the eyes dry, burning, red, irritated, and susceptible to inflammation.

Dry eye syndrome affects millions of people in the United States and many millions more around the world. The Finnish authors of this new study report that up to 30 percent of people age 50 and older may experience dry eye syndrome.

Two studies from Brigham and Women’s Hospital found that among older women, dry eye syndrome leading to a clinical diagnosis or severe symptoms affects more than 3.2 million middle-aged and older women in the United States. Among men, the number is estimated to be lower: more than 4 percent of men 50 years and older, or 1.68 million.

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In the Finnish study, the scientists enrolled 86 individuals ages 20 to 70 who had symptoms of dry eye syndrome. During the double-blind, randomized, parallel trial, the participants received either 2 g of sea buckthorn oil or placebo oil daily for three months from fall to winter, a time of year especially hard on the eyes.

Although all the participants experienced an increase in the concentration of water that evaporated from their eyes, those who took sea buckthorn had a significantly smaller increase. In addition, redness and burning tended to be lower in individuals who took sea buckthorn.

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