Astigmatism is a refractive abnormality of the eye, refers to parallel light into the eye, due to the eye in different meridian refractive force is not equal, can not be gathered in a point, that is, can not form a clear image of the situation. The causes of astigmatism in children’s eyes There are many causes of astigmatism in children’s eyes, the specific causes are as follows: 1. unequal curvature: the curvature of the refractive surface of the eye is inconsistent, which can occur in the cornea or lens; 2. photocentric deviation: mostly caused by disease, trauma-induced lens subluxation or position is obviously oblique; 3. unequal refractive index: is caused by differences in the refractive index of different areas of the lens. Second, how to determine children’s eye astigmatism Children with astigmatism can generally be identified through the symptoms, combined with ophthalmology-related examinations can be confirmed. If children often feel blurred or double vision, often squint their eyes half closed into slits, or eyes are easily fatigued, feel headaches when reading for a long time, and have poorer night vision than during the day, it is likely that they have astigmatism, and at this time they need to be taken for eye examinations to confirm the diagnosis. Common eye examinations are as follows: 1. vision examination: astigmatism can be detected through distance vision and near vision examination; 2. observation of astigmatism table: the shape of the hazy object image on the retina of the astigmatic meridian of the examined eye can be initially understood; 3. retinal examination: if there is a pair of meridians with different refraction and different widths of reflective bands, it mostly suggests astigmatism; 4. examination of refraction: including objective optometry and subjective trial optometry, which can determine The specific situation of astigmatism can be determined. 3, how to treat children’s eye astigmatism 1, observation and follow-up: for children with regular astigmatism, does not cause visual impairment and visual fatigue, regular visits to the ophthalmology examination of vision can be; 2, wearing corrective lenses: if there is a decline in vision or visual fatigue and visual interference symptoms, should wear corrective glasses, irregular astigmatism or high astigmatism can not adapt to frame glasses, can choose to correct corneal contact lenses; 3, surgical treatment. Applicable to congenital astigmatism or acquired high astigmatism due to cataract and other surgeries, such as laser keratoplasty, keratotomy, etc. The prevention of astigmatism in children’s eyes can seriously affect their vision, so the prevention of astigmatism is particularly important, the specific preventive measures are as follows: 1, develop good eye hygiene habits, do not casually touch the eyes with hands or other objects; 2, guide children to avoid contact with dangerous games and toys to reduce eye trauma; 3, take children to the countryside more often, look at the distant green wilderness; 4, ensure that reading books 4.Ensure that the time and posture are reasonable, and the distance is kept between 30-40cm; 5.Carry your child for regular eye examinations, and deal with any problems in time.