Visual Field Testing

What Is It & Why Is It Important?

What is Visual Field Testing?

A visual field test measures your range of vision, including your central and peripheral vision. This test identifies blind spots or areas of reduced vision that could indicate eye diseases or neurological conditions. There are several types of visual field tests that can be performed by an optometrist, with the most common being:

Measuring Your Range of Vision

  • Confrontation Visual Field Test: A simple test where the optometrist moves an object into your visual field to detect major issues.

  • Automated Perimetry Test: A more detailed test that uses a machine to map your field of vision.

  • Frequency Doubling Technology: A specialised test for early detection of glaucoma.

Each type of visual field test serves a unique purpose, from detecting early signs of disease to mapping detailed changes in your vision. Your optometrist will choose the most appropriate test based on your specific needs, ensuring a thorough assessment of your eye health.

Why Do We Perform Them?

The Importance of Visual Field Testing

Visual field tests are effective measures for optometrists to accurately diagnose and managing various eye diseases. This includes:

  • Glaucoma: This condition damages the optic nerve and often causes peripheral vision loss before central vision is affected.

  • Retinal Conditions: Diseases like retinitis pigmentosa or retinal detachment can impact peripheral vision.

  • Neurological Disorders: Conditions such as strokes, brain tumors, or multiple sclerosis may cause visual field defects.

By detecting these issues early, visual field testing allows for timely treatment to preserve your vision and address underlying health concerns.

The Testing Process

What to Expect During a Visual Field Test

A visual field test is a routine part of any exam performed by your optometrist. It is non-invasive, painless, and takes only a few minutes. You’ll typically sit in front of a machine, focus on a central target, and press a button whenever you see lights or patterns in your side vision.

The test results will show any areas where your vision is reduced or absent, helping us diagnose and track any conditions. If you’re experiencing changes in your vision or have concerns about conditions like glaucoma, book an appointment with The Eyecare Spot today.