After suffering from astigmatism, patients may experience uncomfortable symptoms such as blurred vision, burrs when looking at sharp edges, and halos when looking at light sources. Astigmatism is a common disease in ophthalmology and belongs to a type of refractive error, which is usually caused by developmental abnormalities or bad eye habits such as long-term squinting to see things. Patients with astigmatism have blurred vision because of the abnormal refractive state, which prevents them from forming a clear focus on the retina. When astigmatism patients look at sharp edges, they will have discomfort symptoms such as virtual shadows and burrs, and patients are also prone to radial halos when looking at point or line light sources. It is recommended that patients with astigmatism seek prompt medical attention to evaluate their condition and follow doctor’s instructions for treatment.