Open-angle glaucoma is a common eye condition that occurs when the drainage canals in the eye become blocked over time. This blockage leads to increased pressure within the eye, which can damage the optic nerve and result in vision loss. It often develops slowly and painlessly, making it difficult for individuals to notice symptoms until significant damage has occurred. Regular eye exams are essential for early detection, as many people may not experience noticeable symptoms until the disease has progressed. Treatment options include prescription eye drops, oral medications, laser therapy, or surgery to help lower eye pressure and protect vision.