Eye drop derived from seeds of tamarind tree has proven to be effective in treating dry, sore, itchy eyes.
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The solution is a combination of hyaluronic acid and a polysaccharide made from the seeds of the tamarind tree.
Clinical trials have shown that volunteers using the Rohto eye drops had a five-fold improvement in their symptoms compared with a group using only hyaluronic acid.
The condition called "dry eye" syndrome affects up to a third of the population at some point in their lives and occurs where there is a low level of tear (or aqueous humour) production in the eye or an excessive loss of tears from evaporation or a combination of both.
Women are believed to be affected nine times more than men. Post-menopausal women tend to suffer more as they make fewer tears.
It can also be a side effect of some medications including diuretics, some antihistamines, the contraceptive Pill and beta-blockers.
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The symptoms of "dry eye" include discomfort, a feeling of grittiness in the eye or a burning feeling, aversion to light and blurred vision.
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