Study: Drinking too much coffee can make you blind

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Study: Drinking too much coffee can make you blind

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New study has revealed that drinking too much coffee can lead to vision loss or blindness.

05 October,2012 08:20 am

According to a new study, drinking more than three cups of coffee per day has been shown to correlate with an increased risk of developing glaucoma, which can lead to vision loss or blindness.While caffeinated coffee has several health benefits, lead researcher Jae Hee Kang told Health magazine, drinking three or more cups of caffeinated coffee was found to be associated with increased risk of developing exfoliation glaucoma, particularly among those with a family history of glaucoma.While coffee has for some time been known to be problematic for glaucoma sufferers due to the fact that it can increase pressure within the eyeball, Kang asserts that the hot brown drug can be linked to a specific type of the vision-destroying malady: exfoliation glaucoma. This syndrome occurs when material is rubbed off both the eyes iris and lens, which then clogs up the eyeballs fluid-draining system, leading to heightened inter-ocular pressure (IOP), which increases the risk of glaucoma.Kang and her teams study, published in Investigative Ophthalmology & Visual Science, surveyed data from two studies, one with 78,977 women and another with 41,202 men. Its findings are not conclusive in a cause-and-effect sense, however – correlation is not causation, as we all know from our college classes – and the statistical significance of her findings is weak.That said, her team did discover that those subjects who drank three or more cups of caffeinated coffee per day did have a higher incidence of exfoliation glaucoma than those who either abstained or were more moderate in their intake of a cup of joe – or three.