In our lives, you will find that if you close one of your eyes and get things nearby, it will definitely not be easy to get. This is because it is difficult to judge the distance and distance of an object with just one eye. The one you see in one eye is usually a flat image, but if you look at it with two eyes, you can see the concave and convex surface of the object, that is, a three-dimensional object.
The reason why our eyes appear in pairs is actually to create a three-dimensional feeling. In fact, the division of labor between our two eyes is different. , the main eye, , is responsible for the exact matters we want to observe after processing by the brain, and the auxiliary eye is responsible for the blurred part of the background.
The reason why we can see three-dimensional images is because the perspectives of the two eyes are different. The different images seen by the two eyes can be used to judge the distance between the target through the fusion of the human brain. However, for both eyes, the focus process does not occur simultaneously. For example, when we pick up the book and look at it, the main eye will receive images about the phone, and the auxiliary eye will blur the overall scenery except the book, so that our attention will be better focused on the book. In other words, there are only one of the eyes that are really focused on the book.
How to distinguish between the main eye and the adverb eye? In fact, it is also very simple. Most people can tell by judging whether they are left-handed or right-handed. For left-handed people, the left eye is the main eye, and vice versa.
Have you learned it?
