I’m pretty sure we all know that both our eyes work together which is one of the reasons humans are so good at judging distance, catching things, and navigating the world smoothly.
Each eye is sending slightly different views to the brain, which then blends them into a single, rich picture of the world.
Because your eyes are spaced apart, each one has a unique angle on whatever you’re looking at.
The left eye sees a bit more of the left side
The right eye sees a bit more of the right side
These differences are tiny but incredibly important.
The brain combines the two images in the visual cortex, and compares the differences then merges them into one seamless picture. This process is called fusion it’s so automatic you don’t notice it happening.
Depth perception comes from the differences
The slight mismatch between the two images is called binocular disparity. Your brain uses this to calculate distance, which gives you 3D vision accurate depth judgment with the ability to catch a ball, pour water, or thread a needle.
This is why closing one eye makes the world look flatter.
Eye muscles keep both eyes aligned with six tiny muscles around each eye coordinate perfectly, so both eyes point at the same target. This allows smooth tracking of moving objects, quick jumps when reading and stable vision even when your head moves.
If the eyes don’t align properly, the brain may suppress one image to avoid double vision. The brain chooses the best information even though both eyes send data, but the brain can prioritise the clearer image. It can switch dominance depending on the task ignore conflicting information if needed.
This is why many people have a dominant eye, like having a dominant hand.
It’s an elegant partnership between biology and brainpower.
Jo-AnneRamplings 