If left unchecked, this process can lead to total blindness. Usually you can't. The vast majority of cases develop slowly over a period of months or years. In most cases, there are no symptoms. It can gradually destroy your vision without you knowing it.
Some people experience vague symptoms.
Symptoms of more advanced glaucoma can include difficulty in adjusting to dark rooms, loss of side vision, and blurred vision. Other symptoms, such as halos or rainbows around lights and severe headaches or pain may occur. How is glaucoma detected By careful examination of the eye by your eyecare practicioner. The examination includes a simple and painless measurement of pressure in the eye with a tonometer. The doctor will also look into the eye to observe the health of the optic nerve.