Image © National Eye Institute, National Institutes of Health.
Glaucoma
A scene as it might look to a person with glaucoma. Glaucoma has been nicknamed "the sneak thief of sight" because it often goes undetected and causes irreversible damage to the eye. As the disease progresses, vision seems to fluctuate and peripheral vision fails. If left untreated, vision can be reduced to tunnel vision and eventually, total blindness.