Being left or right-handed is a physiological feature of humans and other animals. At birth, any human being has a tendency to automatically use one hand and foot more than the other, and this is known as left or right handedness, there are some people who are ambidextrous and their eyes are also ambidextrous. So.
Maybe you don’t know, if we stare into the distance and focus on a random object, such as a lighthouse in the sea, and when we close one eye, we can see the image of the lighthouse jumping. aside or it will be smaller or larger.
This is not because your eyes have health problems, it’s like a small experiment to test and identify your dominant eye.
Dominant eye is when one of your eyes is dominant over the other. The dominant eye will have better vision, scientists say, and some people can also have the neutral dominant eye – they can use both eyes with equal vision to see.
Most people have a dominant eye, which has good eyesight and helps you see further. (Artwork: Edgar Martirosyan).
Our eyes normally transmit whatever they see to an area in the brain called the visual cortex . The visual cortex contains bands of neurons called the eye columns .
Dominant eyes have more neural connections to this area than non-dominant eyes. Thus, these columns preferentially respond to input from one eye over the other, resulting in dominance. They appear quite early in the development of the brain and eyes.
A study published in the journal Tandfonline found that 35% of right-handed people and 57% of left-handed people in their group dominated the left eye. However, this is not a definite rule.
Some people may have cross-dominance, where their dominant eye is the opposite of handedness. For example, your left eye is dominant, but you are right-handed.
handedness between people is because each hemisphere of the brain controls different functions. The right hemisphere controls the left hand and is responsible for creativity and imagination, while the left hemisphere controls the right hand and operates speech, writing, and communication.
However, when it comes to eyesight, both hemispheres control the eyes. Each hemisphere controls part of the vision of both eyes, so there is no correlation between handedness and dominant eyes.
Knowing which eye is dominant can help you have more benefits in life such as while playing the sport of baseball, tennis or basketball helping you to be more precise in catching the ball or when you are taking pictures or Using a microscope, astronomical makes the image not skewed.
A study on Pubmed to evaluate the benefits of dominant eye in rifle marksmanship showed that subjects with dominant eyes achieved better shooting proficiency than subjects with cross-dominance.
For those who play sports, knowing about their dominant eye can be of great help during training as well as in competition.
Another problem is that of lazy eye (Amblyopia) , a condition where vision in one eye is much weaker than in the other, which often occurs in children.
The cause of this condition is mainly due to weak or underdeveloped eye-related muscles of one eye. If one eye is stronger than the other, children tend to rely on and use this eye more.
If left uncorrected, the brain can essentially use the weaker eye less and gradually decrease eye vision. Treating this problem requires patching the eye so that the child uses the weaker eye more to restore vision.
While in old age, it often causes presbyopia – a natural aging of the eye that makes it difficult to see such objects.
On the other hand, in single vision or mixed vision, one eye sees distant objects, while the other eye sees things up close. Of course, both eyes are still used equally and you can’t usually tell the difference.
For people with monocular vision who are often ordered by doctors to wear extra contact lenses, it is important to put the right type in the eye. One will be for distance (the dominant eye) and the other will be for near vision.
Here are some tests that you can do at home:
The hole-in-card test is commonly used. You can take a rectangular card or a card and make a small hole in it, preferably the size of your eye.
Hold the card with both arms and try to focus on an object at a distance on the other side of the card. Close one of your eyes and try to focus on the subject. The eye that can see through the hole better than the other eye is the dominant eye.
Tests can be done to determine your dominant eye with the Miles test. (Artwork: SA).
There is another easy test you can do right now which is the Miles test , where you form a circle with both hands by crossing your index finger and thumb, and stretching it along. arm’s length.
Focus on an object that is far away from you and try closing one eye to keep the other eye on the object. If the subject remains centered with one eye closed, the open eye is your dominant eye. For the non-dominant eye, the subject will shift to the side.