The people who have diabetes are having high blood sugar. High blood sugar will increase the risk of eye problems. And glaucoma is just one of the eye problems. If you are suffering from the symptom of blurred vision or watery eyes, you may need to see an eye doctor immediately.
As you are a diabetes patient, I suggest you to have regular visits to an eye doctor. Maybe this is a most important way to prevent from glaucoma. Doctors can give you appropriate suggestions. Or you can have your high blood sugar controlled for it may increases the risk of eye problems such as glaucoma.