Astigmatism means that after the parallel light rays are refracted by the refractive system of the eyeball, they do not gather into a single point, but spread out into many light images, so it is called astigmatism.
Whether short-sighted or far-sighted, many people only pay attention to the prescription of the lens when wearing glasses, but pay little attention to astigmatism.
Therefore, many near-sighted people still feel blurred after wearing glasses, and have to squint to see clearly.
Besides, after reading for a long time, the eye sockets are often swollen and painful. I only found out that the astigmatism is too high after seeing a doctor.
Can astigmatism be corrected with myopia surgery?
Yes, laser surgery can correct myopia, hyperopia and astigmatism.
Before myopia surgery, most of my friends corrected myopia and astigmatism by wearing glasses at the same time, so myopia surgery is the same.
Myopia surgery is equivalent to wearing glasses into the eyes. Myopia and astigmatism that can be corrected by glasses are generally suitable for laser surgery.
Under normal circumstances, astigmatism within 600 can be corrected by myopia surgery.
Because laser surgery “carves” a pair of glasses on the cornea, the visual effect will be more natural and comfortable than wearing glasses.
This is especially suitable for some friends with high myopia and high astigmatism. They usually wear ordinary frame glasses, which have large aberrations and may deform things when looking at them. After a long time, they are prone to fatigue and dizziness , starting from the quality of life, more suitable for laser correction.
Many friends know that laser can correct myopia, and they are especially fond of the so-called full femtosecond laser surgery.
The current mainstream femtosecond laser surgery mainly includes full femtosecond and half femtosecond laser surgery.
The two surgical methods are completely different. Half femtosecond is beneficial to patients with poor eye conditions, and the postoperative visual quality is better, while femtosecond SMILE It is mainly characterized by small wound and relatively stable.
When it comes to correcting large astigmatism and hyperopia, femtosecond and half femtosecond laser surgery is generally preferred, especially personalized femtosecond laser myopia surgery guided by corneal topography.
Different from correcting myopia, hyperopia and astigmatism have higher requirements on corneal flaps. Personalized femtosecond laser myopia surgery can customize thicker and larger corneal flaps for hyperopia, providing Large astigmatism Custom elliptical lobes along the astigmatism axis.
Personalized femtosecond avoids hyperopia regression caused by lasik surgery in the past, and corrects astigmatism to obtain better visual quality.