Increased intraocular pressure is typically measured using a tonometer, a device that measures the pressure inside the eye. The test is painless and provides valuable information for assessing the risk of glaucoma.

Diagnostic tests for glaucoma include measuring eye pressure (IOP), evaluating the optic nerve for damage, assessing peripheral vision, and examining the thickness of the cornea. A comprehensive eye examination by an eye care professional is crucial for accurate diagnosis.

While glaucoma cannot be entirely prevented, early detection and treatment can help manage the disease and prevent further vision loss. Regular eye examinations, especially for individuals at higher risk, play a crucial role in identifying glaucoma in its early stages when treatment is most effective.