The main clinical manifestation of astigmatism in the eyes is blurred vision and easy visual fatigue. Mild astigmatism may not have a significant effect on distance vision or near vision, so many patients have normal vision, but when they go to the hospital for an optometry, they are found to have mild astigmatism. In the case of high astigmatism, as well as astigmatism of the oblique axis, there is usually a significant loss of vision and sometimes difficulty in obtaining good corrected vision, so patients with astigmatism may use various modifications, such as narrowing the lid fissure and tilting the head, to make visual disturbances less, or to allow a slight improvement in vision. Patients with astigmatism also usually experience visual fatigue, which manifests itself as eye pain, tearing, double vision, unstable vision, and inability to see close work for long periods of time. Seeing near and far can be blurred, and even systemic symptoms such as headache, dizziness, neck and shoulder pain, drowsiness, fatigue, difficulty concentrating, memory loss, insomnia, loss of appetite, etc. can occur. Therefore, if astigmatism is found to have an impact on vision, it is best to go to the hospital for medical optometry and consider correction of refractive error, which usually requires appropriate frame glasses, and if frame glasses do not fit, you can consider wearing rigid corneal contact lenses for correction, or you can consider surgery.