Can drinking coffee make you go blind?
Switching to decaf could save your sight, claims the Daily Mail. The newspaper reports that drinking three or more cups of coffee a day is linked with vision loss and blindness.
The story is based on a study that looked at the association between caffeine consumption and exfoliation glaucoma. Exfoliation glaucoma is a condition in which fluid builds up inside the eye, putting pressure on the optic nerve. This leads to a degree of sight loss and, in serious cases, total blindness.
In the study, researchers compared rates of exfoliation glaucoma with drinking habits, focusing on caffeinated drinks such as coffee, tea and cola.
The study found that drinking three or more cups of caffeinated coffee daily was linked with increased risk of developing exfoliation glaucoma. Curiously, a similar increase was not found with other caffeinated products.