From a glaucoma viewpoint, there are no dietary or drinking habits that increase the risk of the disease. Drinking a bottle of water very quickly does raise eye pressure, so we recommend you drink slowly to avoid this. Eating a diet with lots of fruits and vegetables is a good health habit. Many studies show that drinking alcohol and caffeine in moderation does not make glaucoma more likely. No nutraceuticals (herbs and the like) have been shown in any decent study to improve the risk of glaucoma (see Are there treatments other than lowering eye pressure?). That doesn’t mean that you can eat, drink, and be merry, since if you do, you won’t live long enough to get glaucoma.
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