Abstract: when many people feel itchy eyes, they will keep rubbing their eyes. In addition, some nearsighted friends don’t like wearing glasses. They are worried that they will be deeper and deeper and can never be removed. Therefore, once blurred, it is easy to form the habit of squinting. These two behaviors will lead to the “unevenness” of the cornea and aggravate astigmatism.
astigmatism, like myopia, is an ametropic state of the eye. Astigmatism patients will have a lot of discomfort. Their eyes are very blurred. They are also particularly prone to fatigue, headache and even strabismus.
what is astigmatism?
astigmatism is an abnormal refractive condition of the eye, which is related to the radian of the cornea.
generally speaking, people’s eyes are like a ball. If the radians of the cornea are consistent in all directions, there is no astigmatism, and the object forms a clear image on the retina. But some people’s eyes are like an egg. The radian of his cornea in a certain angle area is curved, while other angle areas are flat, forming astigmatism, and the object becomes a blurred image on the retina. How does
except congenital astigmatism, The reasons for the formation of acquired astigmatism include long wheat granuloma (commonly known as needle eye) or chalazion, poor eye posture for a long time (such as often squinting, rubbing eyes, lying reading, etc.), eyelid compression on the cornea will also change the corneal radian, astigmatism or increase the degree of astigmatism.
When many people feel itchy eyes, they will keep rubbing their eyes. In addition, some nearsighted friends don’t like wearing glasses. They are worried that they will be deeper and deeper and can never be removed. Therefore, once blurred, it is easy to form the habit of squinting. These two behaviors will lead to the “unevenness” of the cornea and aggravate astigmatism. What is the harm of
because of the change of corneal radian of the eyeball, any external object is blurred when imaged on the patient’s retina. In other words, the clarity of the object image is not enough. This blurred image will stimulate the fuzzy development of the visual cortex on one side of the brain. The delay in the development of the visual cortex is called amblyopia. If high astigmatism is not corrected, it is easy to cause headache, eye acid and other phenomena, as well as bad posture such as crooked head; Therefore, astigmatism must be corrected. How to prevent
first, strictly control the use time of electronic products.
play mobile phones and computers for a long time. Due to blue light stimulation, it is easy to cause astigmatism. Children should play mobile phones for less than 20 minutes each time, play computers for no more than 30 minutes, and play games as little as possible.
second, the time line for reading and writing is very important. The
light should not be too strong. Avoid direct light to the eyes. Try to choose soft lights and high-quality eye protection lights, and the light should shine from the left front of the child.
third, don’t rub your eyes often and squint less.
rubbing your eyes can easily cause corneal damage and irregular astigmatism. Many astigmatists like to squint. This habit will aggravate astigmatism, so astigmatism patients should wear appropriate glasses and don’t squint.
fourth, pay attention to the font of books
when buying books for children, be sure to choose one with clear handwriting and moderate size.
fifth, do not use your eyes
for a long time. The time of reading, writing and watching TV continuously shall not exceed 40 minutes, and the distance between your eyes and the TV screen shall be 6 times of the diagonal of the TV screen.
sixth, consciously protect your eyes
take part in more outdoor sports and don’t stay at home all day. You can look 10 minutes away in the morning and evening every day. At school, I walked out of the classroom during recess and stared at the green plants in the distance.
seventh, pay attention to eye hygiene
guide children to develop good eye habits, wash their hands frequently, and do not touch their eyes with dirty hands.