Firstly, laser surgery is generally performed after the age of 18, as people's eyes continue to grow. This means that just like when a person stops growing taller, the eyes also stop growing at a certain age. If laser surgery is performed too early, while the eyes are still growing, the results may regress over time.

Therefore, astigmatism in children should only be addressed after they reach adulthood, usually after the age of 18, but we generally recommend waiting until after the age of 21. Additionally, if the progression of the eye prescription is less than 50 to 100 degrees per year, the surgery outcomes are more likely to be stable. Generally, laser surgery is primarily used for myopia, which pertains to issues with seeing distant scenes, whereas astigmatism, which generally affects horizontal vision, is usually not corrected through laser surgery.