Can myopia surgery be done for astigmatism?
How to choose myopia surgery for astigmatism?
Astigmatism is a condition in which the eye has an abnormal refractive refraction. Related to corneal curvature. Due to the uneven thickness of the cornea or the inconsistent curvature of the cornea, the light rays passing through these diameters cannot be refracted into a single point, and the object image forms two or more focal points, thus forming a blurred image.
A better surgical procedure for correcting astigmatism is femtosecond laser myopia surgery guided by corneal topography. In general, astigmatism up to 600 degrees can be corrected. However, each procedure has its own differences in the astigmatism that is suitable for correction.
1. ReLEx:
It is suitable for myopia patients with good corneal conditions, sufficient thickness, normal curvature, and astigmatism within 200 degrees.
2. Half femtosecond: suitable for low to high myopia.
It is suitable for patients with large astigmatism and irregular astigmatism, especially personalized half-femtosecond surgery, guided by personalized equipment, which can correct irregular astigmatism along the elliptical flap of the astigmatism axis for people with large astigmatism, and is suitable for patients with thin corneas and complex corneal conditions. Astigmatism up to 600 can be corrected.
3. ICL lens implantation: It is mainly characterized by no cutting of the cornea, and is suitable for patients with high myopia, astigmatism, and thin cornea that cannot be laser surgery.
Attention to friends with too high astigmatism: There is also a possibility of keratoconus, which needs to be investigated.
Who is a good candidate for myopia surgery?
Age 18 to 50 years;
Adequate corneal thickness;
The degree of myopia is less than 1200 degrees, astigmatism is less than 600 degrees, and the hyperopia is less than 600 degrees
The degree has been stable in the past two years, and the annual growth does not exceed 50 degrees;
No active eye disease in the eye;
Therefore, it is necessary to undergo a preoperative examination and evaluation before choosing a surgical procedure to know whether and which surgical method is suitable for surgery.
Self-restraint.