15/04/2026
Why isn’t binocular vision dysfunction (BVD) talked about more?
Because it’s so easy to miss.
Even if you have 6/6 vision, you can still have BVD.
So, let’s start with what your eyes are actually meant to do.
Comfortable vision relies on your eyes to do 2 things well:
1️⃣ Point in the same direction.
Obvious, right?
But even the slightest misalignment can throw your vision off. And you may not even realise that your eyes are misaligned.
Getting both eyes to point in the same direction is called eye teaming.
Misalignment causes double vision. Your brain doesn’t like that. So it compensates in several ways:
❌ Overworks your eye muscles
❌ Ignores your one eye
❌ You develop a head tilt
This happens automatically without you even realising it.
Headaches.
Neck pain.
Dizziness.
Even anxiety.
Most people don’t realise their eyes can play a role.
2️⃣ Focus
Your eyes are like a camera lens. They should be able to focus close up or far away, depending on what you’re looking at.
That ability to focus is called accommodation.
For you to read, drive, or use screens without strain, your eyes need to:
✅ Focus quickly
✅ Hold that focus
✅ Switch focus without trouble
These 2 jobs go hand in hand.
If you struggle to focus, your eye teaming may also be strained.
And if your eye teaming is off, your focusing system tries to compensate by working harder than it should.
That’s one way BVD can develop.
If one or both of these systems aren’t functioning properly, your eyes strain. That causes a wide range of symptoms that you won’t necessarily associate with your vision…
Especially if you can still see clearly.
Sounds familiar?
Book your eye test with EyeSense Vision to explore what might be going on.
And share this post with a friend who’ll find it helpful.