What is the common symptom of glaucoma?

Loss of peripheral vision is a common symptom of glaucoma because the condition leads to damage of the optic nerve, often as a result of increased intraocular pressure. This damage typically progresses gradually, affecting the peripheral vision first before advancing to central vision impairment. Patients may not notice the loss of peripheral vision initially, which is why glaucoma is often referred to as the "sneak thief of sight." The gradual nature of this vision loss means that by the time individuals are aware of their symptoms, significant vision loss may have already occurred. Therefore, regular eye examinations are crucial for early detection and treatment of glaucoma to help preserve vision.