The brain refuses to accept the situation and forces the eye-aligning muscle to correct this error by realigning the eyes. The adjustment is temporary, and misalignment occurs again, followed by realignment.
So, what is BVD? Have you ever wondered why you can only perceive one image with two eyes? This is known as binocular vision. Our brain is so complicated and smart that it can combine two pictures into a single distinct image. For this to occur, the eyes must be perfectly aligned.
People with strong binocular vision have two eyes that function together and are always precisely in sync, allowing them to convey a single crisp, focused image to the brain.
Binocular Vision Dysfunction occurs when the eyes do not act well together or are not fully synchronized. People with BVD struggle to see a single distinct image. This causes pain, including headaches, dizziness, and double.
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People with BVD have pupils that are out of alignment (not in sync); therefore, their eyes send two somewhat different pictures to the brain.
As a result, there is an ongoing process of visual distortion and realignment, which gives the brain the impression that things are moving and, as you might expect, generates a lot of eye muscle strain. The eyes grow exhausted and uncomfortable, leading to unpleasant and occasionally severe symptoms, such as migraines induced by the neck.
