Do Not Have Blur Points On The Eyes?

Illustration of Do Not Have Blur Points On The Eyes?
Illustration: Do Not Have Blur Points On The Eyes?

In the past, there was a friend of mine who said that his eyes had no blur points, aka focus points on everything in front of their eyes. t if I see a tree then the focus point is only on the tree but if it’s the direction of its eye towards the tree but she can see the tree clearly even though her eyes are on the tree …… Is there really eyes like that?

1 Answer:

Hello Ilh12, thank you for asking again.

Human vision requires the function of the eyeball and optic nerve, as well as brain function. That is, the ability to see a person is not only influenced by the normal functioning of the eye and optic nerve, but also requires the normal functioning of the brain. As you know, living things can see an object when a number of beams of light are reflected by that object. A beam of light then passes through the lens of the eye, so the shadow of the object will fall on the retina. The object will be seen very clearly if the shadow falls on a focal point in the retina called the central fovea. Only shadows of objects falling on the central fovea are clearly visible. The shadow of other objects around it, will still be visible but not as clear as the shadow of the object falling on the fovea.

This applies to all human eyes. Thus, it is anatomically impossible for a person to see all objects clearly, because the focal point of the retina only exists at one point, namely the central fovea.

However, because the process of seeing is also influenced by the function of the brain, the function of perception and brain association is very important. When the human brain sees an object that it already recognizes, the brain will automatically fill the 'blank' in human vision. For example, when someone reads the word 'plihna', the brain automatically perceives the word as 'choice', because the brain has recognized the word and automatically corrects errors that are captured by the eye. Another example, when someone sees the bus number from a distance, even though it is blurry, but that person knows that the bus number is P15. That's because the brain already knows the shape of numbers, the shape of the bus, and the color of the bus, even though the eye sees blurry.

Then, your friend may feel that he can clearly see the object around the object that is in focus, because his brain automatically fills in or corrects his vision defects with images of objects that are already recognized by the brain.

Thus the explanation from me, hopefully broaden your horizons. Regards.

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