Myopia and astigmatism are common eye diseases that are two different types of refractive errors but often occur together. Patients with both myopia and astigmatism who are over 18 years old and have stable prescriptions for more than a year can undergo laser surgery treatment. During the laser surgery, both myopia and astigmatism can be corrected simultaneously. Before undergoing surgery, patients need to visit the ophthalmology department of a hospital for an in-person consultation and examination. The exact degrees of myopia and astigmatism are determined through refraction tests, while corneal topography and ophthalmic ultrasound are used to assess the corneal curvature and thickness to determine if the patient is suitable for corrective laser surgery.