The reason of astigmatism of children aged 6 and a half?

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In daily life, astigmatism is a state of ametropia. Simingtang experts point out that due to the complexity of astigmatism symptoms, the causes of astigmatism are also very complex. Let's share about the causes of astigmatism in the 300's of 6-and-a-half-year-old children? Let's go.

The reason of astigmatism of children aged 6 and a half?

First: curvature astigmatism: caused by abnormal changes in corneal curvature. If the meridian with the largest refractive power and the meridian with the smallest refractive power are perpendicular to each other, regular astigmatism is caused, which is mostly congenital, and the degree of astigmatism is large. If the surface of the cornea is irregular deformation, uneven bending, unable to form a focus on the retina, it is called irregular astigmatism, such as corneal traumatic scar, keratoconus, corneal degeneration and so on.

Second: refractive rate astigmatism: it is caused by the change of refractive index of lens. Astigmatism degree is generally small, such as senile cataract, lens cortex water gap, feathery opacity, resulting in changes in the refractive index of the lens, can form astigmatism.

Third: eccentric astigmatism: previously seen in crystal displacement, such as congenital deviation, crystal subluxation, etc.

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Therefore, don't let astigmatism accompany your child for a lifetime. Having a bright and fresh future is the best gift for your child!