The concept of "left-handed" is clear to everyone, although people have two hands, but there is a more flexible and more powerful, which is the "main hand" of the human body.
Most people's main hand is the right hand, but there are also some people whose main hand is the left hand, and they are accustomed to using the left hand when writing and the like, so we call it "left-handed".
But the eyes also have "left-handed" and "right-handed" distinctions, do you understand?
The eyes are divided into "main eye" and "auxiliary eye"!
Although your eyes are seeing,
But they don't always work at the same time,
Only one eye undertakes the main visual task,
The other one is quietly "touching the fish"!
First, what is the main eye?
The phenomenon of the "dominant eye" is academically known as "Ocular dominance" (literal translation: visual dominance). From a physiological point of view, everyone has a dominant eye, which may be the left eye or the right eye.
Usually, the eye that people use to aim is the dominant eye.
What the subjective eye sees is preferentially accepted by the brain. The human brain habitually uses the imaging of the main eye to analyze and locate objects, and the main eye is often better developed than the secondary eye due to more movement and more supplies.
For example, we see children on the street wearing glasses and their glasses are covered with black cloth.
In fact, this is to correct the hypoplasia of the paraphrasiac.
It is the main eye that is obscured, so that the secondary eye is forced to assume the responsibility of the master, constantly observing and analyzing things, and the nutrients of the body are constantly replenished in the past, so that after the accumulation of time, the condition of the dysplasia of the secondary eye is solved.
2. How to distinguish the main eye
In addition to going to the hospital or a regular optical shop for optometry, you can also try a simple preliminary identification.
1. Open and approach with both hands, and use the tiger's mouth to form a triangular or circular gap.
2, look for the target object, can be a pen, can also be a cup; The body is facing the target and the eyes are facing the object.
3. Place the target object in the middle of the gap between the hands, and then alternately close the left and right eyes to observe the displacement of each eye for the target object.
4. If the displacement of the target object is small, the eye that is open at this time is the main visual eye; If the displacement is large, the open eye is a secondary eye.
Iii. Why is it necessary to affirm the eyes of the Lord?
Some people may have dizziness, eye pain and other conditions after wearing glasses, which may be caused by the auxiliary eye occupying a dominant position. Therefore, when performing professional optometry and correcting and adjusting vision, we should try to ensure that the adjustment of the main visual eye is accurate enough.
Choose myopia surgery to correct vision, and follow the above principles of glasses in the design of the operation, so that the visual level of the postoperative primary eye is not lower than that of the non-main eye.
In addition, in some sports that have higher requirements for aiming accuracy (archery, shooting, etc.), it is also important to determine the main eye and use the main eye to aim.