Blurring of the eye to see moving images may be due to several reasons: i. Abnormal fusion function. Under normal circumstances, the brain can fuse the object images seen by both eyes into one clear image. When the fusion function is abnormal, blurred images or even double images can occur. The symptoms are especially noticeable when looking at moving images. You can do fusion function training with the same vision machine, and some patients can improve or be cured. Second, astigmatism. When the astigmatism is greater than 1.00DC, the object is not focused into a clear point on the retina, but a diffuse circle, resulting in a blurred picture. It is recommended to wear suitable astigmatism corrective lenses to improve the symptoms. Third, the refractive error of both eyes. When the difference between the refractive error of the two eyes is greater than 2.50DS, there will be difficulties in image integration, resulting in blurred vision and double vision. It is recommended to wear contact lenses to reduce the difference in imaging between the two eyes.