What is a common complaint reported by patients with untreated primary open-angle glaucoma?

Patients with untreated primary open-angle glaucoma often experience peripheral vision loss, which is a hallmark symptom of the condition. This gradual loss of side vision can go unnoticed for an extended period, as the central vision typically remains intact until the disease progresses significantly. The damage is primarily caused by an increase in intraocular pressure that affects the optic nerve.

In the early stages of glaucoma, individuals may not recognize the changes in their vision because they have a wide field of vision that compensates for the lost peripheral sight. As the disease advances, however, the loss can become more pronounced, often described as "tunnel vision." Monitoring changes in peripheral vision is crucial for detecting glaucoma early, underscoring the importance of regular eye examinations, especially for at-risk populations.

This understanding of the primary symptoms assists healthcare providers in early diagnosis and effective management of glaucoma, aiming to preserve vision and reduce the risk of blindness.