Why Visual Field Tests Are Critical for Detecting Glaucoma

Glaucoma is often called the “silent thief of sight” because it can cause permanent vision loss without noticeable symptoms in its early stages. At Texas State Optical Kerrville, visual field tests play a crucial role in identifying glaucoma early and protecting long-term vision.

What Is a Visual Field Test?

A visual field test measures how well you can see in your peripheral vision. While most people focus on central vision, glaucoma often affects side vision first. These subtle changes are usually impossible to notice without specialized testing.

During the test, you’ll look straight ahead and respond when you see small lights or patterns appear in different areas of your visual field. The results create a detailed map that shows how well your optic nerve is functioning.

Glaucoma Often Has No Early Symptoms

In its earliest stages, glaucoma typically causes no pain or obvious vision changes. By the time symptoms become noticeable, irreversible vision loss may have already occurred. Visual field testing can detect functional vision changes long before you’re aware of them.

It Identifies Peripheral Vision Loss

Glaucoma damages the optic nerve, which disrupts how visual information is sent to the brain. This damage often starts with peripheral vision loss. Visual field tests are specifically designed to catch these early changes.

It Helps Confirm a Diagnosis

While eye pressure readings and optic nerve imaging are important, they don’t tell the whole story. Visual field testing shows how glaucoma is affecting your actual vision, helping your eye doctor confirm or rule out a diagnosis.

It Tracks Disease Progression

For patients already diagnosed with glaucoma, visual field tests are essential for monitoring whether the condition is stable or worsening. Comparing results over time allows your optometrist to adjust treatment as needed.

Who Should Have Visual Field Testing?

Visual field tests are especially important if you:

• Are over the age of 40

• Have a family history of glaucoma

• Have elevated eye pressure

• Have diabetes or other systemic health conditions

• Are African American, Hispanic, or Asian, as these groups have a higher risk of certain types of glaucoma

Even if you don’t fall into these categories, visual field testing may still be recommended as part of a comprehensive eye exam.

Stay Ahead of Glaucoma With Preventive Care

Glaucoma is a serious eye condition that can lead to permanent vision loss if left undetected. Because it often develops silently, visual field tests are one of the most powerful tools for catching glaucoma early, monitoring its progression, and protecting your sight. Routine testing allows your eye doctor to take action before noticeable vision changes occur.

Schedule your annual eye exam and visual field exam at Texas State Optical Kerrville and stay ahead of glaucoma. Visit our office in Kerrville, Texas, or call (830) 201-3200 to book an appointment today.