The difference between astigmatism and myopia is mainly manifested in the formation of different mechanisms, different symptoms, different degrees of growth and so on.
1. Different formation mechanisms: astigmatism refers to the parallel rays of light entering the eye can be imaged on the retina, but can not form a focal point, can not be clearly imaged; myopia mainly refers to the parallel rays of light entering the eye is imaged in front of the retina, but can not be imaged on the retina.
2. Symptoms are different: astigmatism generally manifests itself in symptoms as double vision, and it is not clear when looking at things at a distance or near; myopia generally manifests itself in symptoms as blurring when looking at things at a distance and clear when looking at things at a near distance.
3. Difference in degree growth: astigmatism is generally stable; myopia may grow continuously with the development of the eyeballs.
When vision problems occur, it is recommended that patients go to the hospital for an optometry examination to clarify the refractive status.