If you have a stroke or a traumatic brain injury, you may find you’ve lost vision in one-fourth of the visual field (the entire area that you can see). There are different types depending on where the vision is lost.
Quadrantanopia is a medical term that means you have a loss of vision in one quarter (one-fourth) of your visual field. You can divide your visual field into four parts or quadrants.
You have a right and left quadrant on the top and a right and left quadrant on the bottom. Quadrantanopia means that you can’t see out of one of those spaces. They appear to be blacked out.
If you can’t see out of one half of your field of vision, you have hemianopia. “Anopia” means the absence of vision, or blindness. The “hemi” means one-half and the “quadrant” means one-fourth.
Another name for quadrantanopia is quadrantopsia.
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There are different types of quadrantanopia depending on which quadrant is affected.
Another term for a homonymous superior quadrantanopia is “pie in the sky” quadrantanopia. Another term for loss of vision in the lower quadrants is “pie on the floor” quadrantanopia.
The main sign of quadrantanopia is losing vision in one-fourth of your visual field.
You may find yourself moving your head around to compensate for the loss of vision. It may seem to you that objects appear suddenly, or you may bump into or trip over things.
Causes of such damage may include:
It’s possible for you to have vision loss on one side that causes damage on the opposite side. The term for this is contralateral damage.
Your eye care specialist will conduct certain tests to diagnose any eye condition, including taking a medical history and doing an eye exam.
Other tests include:
Your vision may improve spontaneously, but that usually happens within three to six months. If recovery doesn’t happen, you may be able to manage symptoms.
A healthcare provider may suggest visual rehabilitation strategies to help you compensate for loss of vision. These strategies may include:
You can do things that help you reduce your risk of stroke and traumatic brain injury. These things would then reduce your risk of losing one-fourth of your visual field.
To reduce your risk of stroke, you can:
To reduce your risk of traumatic brain injury, you can:
Review your medicines and supplements regularly to find out if any of them make you dizzy.
There’s no cure for quadrantanopia, but it may improve or potentially resolve on its own. In some cases, you may find that you’re still able to do most things that you’re used to being able to do.
If vision loss remains, your provider may suggest you take advantage of resources that’ll help you deal with these changes.
Always contact a healthcare provider if you have vision loss. Get immediate medical help if you think you may have had a stroke or if you’ve had a traumatic brain injury. These injuries are ones that happen in car accidents, work accidents or other reasons you may get blows to the head or puncture wounds.
If you have quadrantanopia, you may want to ask these questions or ones like them:
A note from Cleveland Clinic
It’s always best to have any vision changes evaluated. If you’ve had a stroke or a brain injury, your healthcare provider will do an examination at that time. Let them know immediately if you have any difficulty seeing, or if you feel like one eye isn’t working. Continue to get exams as needed and to follow the recommendation of the healthcare team. Feel confident in asking questions and getting the answers you need.
Last reviewed by a Cleveland Clinic medical professional on 03/19/2023.
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