Myopia is defined as a degree of myopia greater than or equal to 50 degrees, mild myopia is between 50 and 300 degrees, also known clinically as low myopia, between 300 and 600 degrees is moderate myopia, 600 degrees or more is considered high myopia and can be called severe myopia. Mild myopia does not have a significant impact on vision and is unlikely to cause serious lesions of the eye. Patients with low myopia can consider whether they need to wear myopic glasses to improve their vision according to their own vision needs, and they can also consider having their fundus checked once a year to rule out fundus lesions caused by myopia, although the probability is very low, but having their fundus checked once a year is good for their health.