A cup of coffee a day can improve your eyesight.

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Coffee has also been shown to reduce the risk of Parkinson's disease, prostate cancer, diabetes, Alzheimer's disease and other chronic diseases associated with aging. It also reduces chronic inflammation and prevents all kinds of diseases.

A daily cup of coffee can save your eyesight, scientists claim.

A cup of coffee a day can improve your eyesight, scientists say.

A chemical found in the drink prevents deteriorating eyesight and possible blindness from retinal degeneration due to glaucoma, ageing and diabetes.

A chemical found in coffee prevents vision loss and even prevents glaucoma, corneal aging and retinal degeneration caused by diabetes, thus preventing blindness, research has found.

Researchers at Cornell Univesity in New York were looking at coffee's antioxidant effects when they made the discovery.Coffee contains 1 percent caffeine but between 7 and 9 percent chlorogenic acid which is a strong antioxidant.The study, published in the Journal of Agricultural and Food Chemistry, found that in mice this acid prevented retinal degeneration.

The study was discovered by researchers at Cornell University in New York City while studying coffee's antioxidant effects. Coffee contains 1% caffeine but 7% to 9% chlorogenic acid, a powerful antioxidant. The study, published in the Journal of Agricultural and Food Chemistry, found that chlorogenic acid in mice prevented retinal degeneration.

Chang Y. Lee, a professor of food science and the study's senior author said: ‘The retina is a thin tissue layer on the inside, back wall of the eye with millions of light-sensitive cells and other nerve cells that receive and organise visual information.‘It is also one of the most metabolically active tissues, demanding high levels of oxygen and making it prone to oxidative stress.‘The lack of oxygen and production of free radicals leads to tissue damage and loss of sight.’

Chang Li, a professor of food science and one of the study's authors, said: "The retina is a thin membrane of tissue in the eye, the back wall where tens of thousands of photoreceptor cells and other nerve cells receive and organize visual information. It is also one of the most metabolically active tissues and therefore requires high levels of oxygen to cope with oxidative stress. Lack of oxygen and free radical production can lead to retinal tissue damage and blindness."

He added: ‘The study is important in understanding functional foods, that is, natural foods that provide beneficial health effects.

He added: "This study is important for understanding functional foods, which are naturally beneficial to our health."

‘Coffee is the most popular drink in the world, and we are understanding what benefit we can get from that.’

Coffee is the most popular drink in the world. We now know what benefits we can reap from it."

Previous studies have shown that coffee also cuts the risk of such chronic diseases as Parkinson's, prostate cancer, diabetes, Alzheimer's and age-related cognitive declines.

Previous studies have shown that coffee can also reduce the risk of Parkinson's disease, prostate cancer, diabetes, Alzheimer's disease and other chronic diseases caused by aging.