A visual field test is usually a part of a routine eye examination. Despite the term’s technicality, its essence is straightforward. It measures how much you can see around you while focusing your eyes on a central point. Understanding what happens during this test and its importance helps maintain optimal eye health.
Here’s what you need to know about visual field tests.
Why Is Visual Field Testing Important?
Many vision-threatening conditions don’t manifest signs until their later stages, such as glaucoma. Visual field testing helps in the early detection and management of eye problems that can impair peripheral vision. It can reveal the presence of blind spots or scotomas which might signify other eye or brain disorders.
Moreover, visual tests are essential for people diagnosed with or at risk of retinal conditions. It’s because they can pinpoint areas of vision loss or abnormalities in the visual field. These tests enable early detection and timely intervention, dramatically improving treatment outcomes and preserving vision.
What Are the Different Types of Visual Field Tests?
Automated Static Perimetry Test
Automated static perimetry tests let experts map out the visual field. This computerized test has you respond to light of varying brightness appearing in your peripheral vision. It aids in diagnosing and monitoring conditions like glaucoma.
Kinetic Visual Field Test
Kinetic visual field test involves moving light targets instead of stationary flashes. It assesses how well your eyes can track and detect moving objects in your peripheral vision.
Confrontation Visual Field Test
Your doctor might perform a confrontation visual field test during your eye exam. It’s a preliminary way to check for significant visual field loss. This quick screening tool can indicate whether further, more detailed testing is necessary.
Specialized Tests for Comprehensive Analysis
Experts might employ specialized tests, such as frequency doubling perimetry or electroretinography, for conditions that require more in-depth examination or monitoring. These tests help your eye doctor thoroughly examine the retina and other parts of the eye.
When Do You Need One?
It isn’t uncommon for patients to ask their optician or optometrist if they need to get a visual field test. Those diagnosed with glaucoma, retinal disorders or other serious eye conditions need regular testing. It’s the same for individuals experiencing peripheral vision loss or those with systemic conditions that could impact the eyes, such as diabetes or high blood pressure.
Also, if you’re noticing any changes in your vision, like not seeing as well in your peripheral vision as you used to, it’s imperative to schedule a visual field test. Early detection allows for early intervention and can prevent further vision loss. 