Glaucoma primarily affects which ocular structure?

Glaucoma primarily affects the optic nerve, which is crucial for transmitting visual information from the retina to the brain. In glaucoma, increased intraocular pressure can damage the optic nerve fibers, leading to visual field loss and, if untreated, can cause blindness. The condition typically develops gradually, often without noticeable symptoms until significant damage has occurred. Monitoring and managing intraocular pressure is vital in preventing optic nerve damage in individuals diagnosed with glaucoma. Understanding this focus on the optic nerve helps in grasping the overall implications of glaucoma on vision and its management.