The eye axis mostly refers to the astigmatic axis position, and if the axis position is 0, it means that the patient’s astigmatism axis position is at 0 degrees. The axial position of the eye is usually an indicator of the degree of astigmatism, usually in the range of 0 to 360 degrees. Clinically, most patients have conformal astigmatism, with an axial value of about 180 degrees, while a small number of patients have retro-axial astigmatism, with an axial value of about 90 degrees. Individual patients, on the other hand, have oblique axial astigmatism, with axial values generally ranging from 45 to 135 degrees. The first two types of astigmatism have a relatively small impact on vision, while the latter has a larger impact. Patients with significant astigmatism are advised to seek prompt medical attention to evaluate their condition and follow the doctor’s instructions for treatment.