Tuesday, 6 November 2012
A study conducted by Harvard University has uncovered that high consumption of coffee is linked to vision loss.
The research which was published in ‘Investigative Ophthalmology & Visual Science’ demonstrates an increased risk in developing exfoliation glaucoma among participants who drank three or more cups of caffeinated coffee a day. In fact heavy coffee drinkers were 34% more likely to develop the eye disease than those that don’t drink caffeinated beverages. Surprisingly other drinks that include caffeine such as tea or coke showed no connection between high consumption and an increased risk of exfoliation glaucoma.
Exfoliation glaucoma affects around 10% of adults over the age of 50 and is the build-up of tiny white flakes on the lens of the eye. As the eye moves, it pushes the flakes away, causing the spongy tissue around the eye to get clogged up preventing it from draining the eyes fluids properly. The result is a feeling of high pressure in the eye. People who experience exfoliation glaucoma are six times more likely to develop glaucoma, an eye disease that damages the optic nerve and can result in vision loss.
Researchers surveyed 79,000 women and 42,000 men asking them to fill out questionnaires about their consumption of drinks with high caffeine content and examined their medical history. Everyone who participated in the study was over the age of 40 and had attended regular eye tests since the 1980’s.
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