How to explain the cause of cross eyed?

Cross-eyed is the pupil in the middle of the eye, which is naturally or artificially close to the middle, and looks like two chickens fighting, so it is called cross-eye, also called the opposite eye. The eyes of a normal person look at the same object, and the object is imaged at the retina of the two eyes, and overlaps in the optic center of the brain to become a complete single object with a three-dimensional sense, this function is called binocular monovision. However, in the process of binocular monovision, infants and young children are easily affected by external factors, resulting in one eye fixing on the target, and the other eye is deviated and cannot look at the same target, so strabismus occurs.

In medicine, the inward squint of the eyeball when looking at an object is called esotropia, which is commonly known as "cross-eyed".

Infants and young children can sometimes see the two eyes condense into a "pair of eyes", how harmful this phenomenon is, this is a concern of many parents.

To understand the causes of the "opposite eye", we must first understand the physiological phenomena that occur when the human body looks at objects. The human body needs different diopters to look at distant objects and near objects, and the function of the eye to pay the corresponding diopter according to the fixation distance is called "accommodation", which increases when looking near and decreases when looking far. On the other hand, when looking at a close object, both eyes must be gathered inward at the same time to ensure that both eyes see the object at the same time, a function called "divergence".

"Accommodation" and "Divergence" are normal to match each other, increase or decrease in the same proportion, and when their balance is disrupted for some reason, abnormalities occur. The most common factor is the hyperopia state of the eye, because the hyperopia eye has to pay more "adjustment" than normal and does not need to increase the "divergence", but with the increase of accommodation, the interaction function also increases the "divergence", which can make the eyeball produce too much cohesion and appear inward-slanted "opposite eyes".

There are two situations in which infants and young children have the phenomenon of "eye to eye", one is that the development of infants is not perfect, and the interaction function of both eyes is not perfect, which is a temporary physiological reaction and can disappear after the development is perfect. On the other hand, most of the children in the process of development have farsightedness, often to increase the divergence, the situation of esotropia, the greater the degree of hyperopia is more obvious, but this does not mean that there is already strabismus, because as long as health measures are taken in accordance with the law of development, with the development process will gradually normal. Only in the case of long-term hyperconvergence will irreversible strabismus occur.

After understanding the causes of the formation of "right eyes", we will also know how to prevent and treat them. In the stage when infants and toddlers cannot measure their visual acuity, care must be taken not to create conditions for children to look excessively at objects close to them (e.g., hanging a string of toys in front of them for them to look at or play with), and to allow children to look at distant objects as much as possible. When you are older, teach your child to read the eye chart in time, and immediately go to the hospital to dilate the pupil with atropine after reading the eye chart.

When the degree of hyperopia is low, you only need to establish a good reading habit, and you can develop normally without looking at objects too closely, and those with high degree of hyperopia need glasses to eliminate the divergence of the eyes and eliminate the "right eye". This kind of glasses must be worn frequently, and re-inspected every six months, and the glasses should be replaced in time with the change of prescription. If the vision cannot be completely corrected to normal with glasses, it is a symptom of amblyopia, and amblyopia** should be done.

However, strabismus is not all due to the above reasons, there are other congenital, acquired factors can cause strabismus, which needs to go to the hospital for systematic examination to identify, when the distance between the corners of the baby's eyes is wider than that of a normal person, the appearance is also like a "pair of eyes", but this is a "false" pair of eyes. Regardless of the factors that cause the eye pairing, the above prevention and control principles are beneficial and harmless.

Hello In medicine, the inward squint of the eyeball when looking at an object is called esotropia, which is commonly known as "cross-eyed". Why doesn't "cross-eyed" heal on its own? It starts with the muscles and nerves that are responsible for eye movements.

There are six extraocular muscles on the outside of the eyeball, and normally, when people look at something, the movement of the eyes is parallel and consistent, no matter which direction it is in. Since the contraction of the muscles is carried out under the regulation of the nerves, both eyes of the target on the right are turned to the right, and both eyes of the target on the left are turned to the left, and the phenomenon of the right eye to the right and the left eye not to the right will not occur. If the child's two eyes are not developed, one eye is normal and the other eye is highly myopic or astigmatism; or the distance between the two eyes is too far apart; Or young children like to play with small toys and often play games in low light conditions since childhood, resulting in eye muscle balance disorder, neuromuscular paralysis, so it is likely to occur "cross-eyed".

"Crossing eyes" is not timely**, neuromuscular paralysis cannot heal itself. Moreover, because one eye is long-term inverted, the patient cannot use this squint, and over time, it will affect the development of the eye and even develop amblyopia. If it is not timely**, it will be difficult to recover vision in the future.

Children who are "cross-eyed" only use one eye to see things, so they don't have a three-dimensional sense of seeing things, and they can't distinguish the distance of things. For example, when doing needlework, the thread cannot be threaded into the eye of the needle; When pouring ink, the pen cannot be inserted into the ink bottle; I can't reach small things all the time, which affects my future work and study.

Strabismus is often referred to as "strabismus" and medically known as "esotropia". It shows that when one eye looks forward at an object, the other eye turns inward toward the nose, or when both eyes look at an object, both eyes turn inward. The former is divided into isotropic esotropia and paralytic esotropia, and the latter is fixed esotropia.

The development of binocular vision in normal people begins at 3 months after birth and lasts until about 8 years old, especially at the age of 1-3 years. During this time, if the child has an eye disease that affects or disrupts binocular vision and is not timely**, the normal visual function of both eyes will not be restored. For a child with esotropia who has one eye fixed all the time, it is necessary to know his vision in time.

Because children with esotropia cannot gaze at the target at the same time, the objects seen by the strabismic eye and the non-strabismic eye cannot be fused into a single object image, but interfere with each other, and even affect the visual clarity of the non-strabismic eye.

How is strabismus formed? 1. Regulatory TheoryThe adjustment of the eye is very important, and the adjustment is the basic requirement to maintain the normal operation of the eye. Myopia occurs if the eyes are overtired, which leads to a decrease in the ability to accommodate, which makes the muscles around the eyes uncoordinated, leading to strabismus.

Note that it is caused by refractive error.

2.Anatomical TheoryStrabismus occurs when the extraocular muscles of one eye are overdeveloped or underdeveloped, or other structural abnormalities that cause muscle coordination to be out of balance. 3.

Binocular Reflex Theory Binocular monocular vision is a conditioned reflex, which is accomplished by the fusion function and acquired. If you suffer from amblyopia, your eyes will have different vision, and the eyes with vision loss will be occluded, which will separate your eyes and cause strabismus.

4.Genetic TheoryIf there are many people in the same family who suffer from strabismus, strabismus may be related to genetic factors, which are congenital. Strabismus may be closely related to eye habits, extraocular muscle development, amblyopia, and genetic factors.

Therefore, parents should pay more attention to their children's growth and go to the doctor in time when there is an abnormality.