What is typically the first type of vision loss experienced in glaucoma?

• A. Loss of central vision
• B. Loss of peripheral vision
• C. Clouded vision
• D. Blurred vision

Answer: (B)

In glaucoma, the initial type of vision loss that typically occurs is the loss of peripheral vision. This is often due to damage to the optic nerve, which can result from increased intraocular pressure. As glaucoma progresses, individuals may experience a narrowing of their visual field, starting from the periphery and moving inward, which can lead to "tunnel vision." This peripheral vision loss is a hallmark sign of glaucoma, and if not managed effectively, can ultimately lead to significant visual impairment.

Understanding this characteristic of glaucoma is crucial for early detection and intervention. It highlights the importance of regular eye examinations, especially for individuals at higher risk, as peripheral vision loss can go unnoticed until it becomes severe. This contrasts with conditions that primarily impact central vision or lead to blurriness, which are not typically seen in the early stages of glaucoma.