Amongst all good effects Green Tea has on our health, now we can add also another one – the ability to help defending against eye diseases. In fact, the natural antioxidants – catechins – contained in Green Tea are able to penetrate in the inner occular tissues. They cross the eyes on their way from mouth to the gastrointestinal system.

This fact was discovered at the Department of Ophthalmology and Visual Sciences at Hong Kong University. The study showed significant levels of absorption of catechins within various parts of the eye. It turned out that the eyeball, the retina and other ocular tissues derived benefits from these antioxidants. The highest level of gallocatechins was found in the retina, while the aqueous humour (the fluid which helps to maintain the shape of the lens of the eyes) has absorbed a higher amount of epigallocathecins.

It is necessary to point out that drinking Green Tea may help to protect the eyes from oxidative stress, which is known as the cause of several eye diseases. According to the research conducted, the reduction of the stress can last for more than 20 hours, after consuming this healthy beverage.

By protecting the eyes from free radicals, Green Tea reduces the risk of degenerative aging damages such as glaucoma, an irreversible disease affecting slowly the optic nerve and deterioring the sight to complete blindness.

Even though the experiment could not identify the amount of active substances in Green Tea that could be used for the cure, it seems that the catechins, present in the leaves of this oriental plant, are joining other antioxidants (such as vitamin C, vitamin E, lutein and zeaxanthin) in prevention of eye problems. According to the publication of the study in a specialized magazine Journal of Agricultural and Food Chemistry, further tests need to be done before confirming the official proof.