What to do if you have farsightedness and astigmatism in small children
Because there is a physiological astigmatism in the human eye, that is, there will be a relatively low degree of astigmatism after birth, especially farsighted astigmatism, which is generally below 150 degrees, if this astigmatism does not affect vision and does not cause amblyopia, it generally does not need special treatment, and it does not have to be glasses.
However, if the astigmatism degree of farsightedness exceeds 150 degrees, or some obvious oblique axis astigmatism and irregular astigmatism, it will obviously affect vision and even cause amblyopia. If the child has farsighted astigmatism, it depends on the degree of astigmatism, the axis position of astigmatism, and the impact on vision to determine how to treat it. Astigmatism is a kind of refractive error, simply put, the external parallel rays can not form a clear focus on the retina after being refracted by the refractive system of the eyeball, but form a blurred focal line, this refractive state is called astigmatism.
Can astigmatism recover in a three-year-old baby?
The shape and curvature of the cornea of children around the age of 3 have been basically developed, and the astigmatism or existing astigmatism caused by the age of 3 is difficult to recover, which is relatively stable or changes in time, and the degree of change will not be very large, which is about 50-100 degrees. If a 3-year-old child finds astigmatism, he should actively perform dilated refraction, and if the astigmatism is relatively large, he needs to wear glasses to correct it to avoid amblyopia. It is difficult for 3-year-old children to recover from astigmatism, which is mainly related to the curvature of the cornea and the shape of the cornea. If the degree of astigmatism is relatively small, such as less than 100 degrees, the impact on vision is relatively small, and it can also be observed first.
Laser surgery for astigmatism
Generally, myopia laser surgery is divided into superficial surgery, half femtosecond surgery and full femtosecond surgery, and the full femtosecond surgery requires more cornea to be cut, and the ability to correct astigmatism is also limited. Half femtosecond surgery can perform topographically guided excimer laser surgery, so the ability to correct astigmatism will be stronger than that of full femtosecond, that is, if it is irregular astigmatism, it can also be corrected by using topographic map guidance.Laser surgery can correct astigmatism, but the ability to correct astigmatism is also limited, generally less than 300 degrees of astigmatism can be completely corrected, but above 300 degrees of astigmatism may be a little difficult to correct. But in general, laser surgery can correct astigmatism at a certain degree, and generally less than 300 degrees should not be a problem.