Glaucoma is a serious eye condition characterized by increased pressure within the eye, which can to vision loss if not treated promptly. There are two main types: primary glaucoma, which includes open-angle and closed-angle glaucoma, and secondary glaucoma, which results from other conditions. Diagnosis typically involves comprehensive eye exams and tests to measure eye pressure, while treatment options may include eye drops, laser therapy, or surgery. Early detection is crucial for preserving vision, regular eye check-ups essential for anyone at risk.