Glaucoma is not just one disorder, but an umbrella term for a group of disorders that cause damage to the optic nerve. In the United States, this condition is the second-leading culprit responsible for blindness, behind macular degeneration. Globally, it trails only cataracts.
For most individuals, the cause is elevated pressure within the eye. However, some patients have normal intraocular pressure.
Our optometrist notes that professionals often refer to the disorder as a “silent thief”. This is because most types generate no pain and cause no symptoms until the patient has already suffered an observable vision loss. Failure to treat eventually results in blindness. A majority of patients experience few early symptoms and sometimes none. The symptoms vary according to the type and the stage of disease present.