What symptom performance is astigmatism of 3 years old child?

summary

"Astigmatism is a form of ametropia. In daily life is very common, many people will have the phenomenon of double vision, blurred vision, visual fatigue, squint and so on, but because the symptoms are not serious, did not pay attention to. In fact, astigmatism is not terrible, most people's eyes have varying degrees of astigmatism Director Sun Wei said. In normal refractive state, the external objects focus on the retina after passing through the refractive system of the eye, and the retina transmits the information to the brain, thus realizing the process of object recognition. Astigmatism generally speaking is the original spherical eyeball into a football, then the object can not be well focused on the retina, can not form a focus, so it appears to see things blurred. Now let's talk about the symptoms of astigmatism in 3-year-old children?

What symptom performance is astigmatism of 3 years old child?

1. Slight astigmatism is usually hard to detect, but when you look at something at a certain distance, your eyes will be swollen, tired, blurred, and even have a headache. Serious astigmatism, will appear to see the object can't see clearly, sometimes appear distorted phenomenon, can't distinguish between near and far. More serious astigmatism will appear double shadow phenomenon.

2. The blurred image on the retina needs constant fine adjustment, and the vision is distorted, so astigmatism, especially hyperopia astigmatism, is prone to visual fatigue.

3. In order to see more clearly, the patients with highly asymmetric astigmatism often take tilted head position, which leads to strabismus, and astigmatism can be recovered after correction. People with high astigmatism often squint when they look at distant objects to achieve pinhole and fissure effect, so as to improve their vision.

matters needing attention

In order to accurately diagnose astigmatism, we usually need to go to a regular hospital for astigmatism examination. There are many ways to check astigmatism, and the commonly used one is astigmatism meter. Astigmatism watch is like a clock dial with many radiation lines. The normal eye can see every line on the astigmatism table clearly, but the astigmatism eye can only see some lines clearly and thickly, while the other lines are blurred and pale. Professional Optometrists can use their own techniques and methods to check the astigmatism and axial direction.