The numbers 3.0-5.3 can be analyzed according to the international 5-point vision scale standard, which is divided into 5 levels, each of which indicates a different degree of myopia. However, because each person is different, it is not accurate to base the number of prescriptions on the 5-point scale. The appearance of eye prescription is mainly caused by refractive error, and in terms of myopia, 5.0 in the 5-point scale is the standard vision. I. 5.0 or more: 5.0-5.3 usually belongs to the better vision, and there is no degree. Two, 4.0-5.0: 4.0-5.0 can appear in different degrees of myopia. 1, 4.5-5.0: 4.5-5.0 when the degree is generally 100-300 degrees, for mild myopia, often referred to as pseudomyopia, after a professional examination can be equipped with eyes to correct vision; 2, 4.1-4.5: 4.1-4.5 when the general degree of 320-60 degrees 0, for moderate myopia. This is true myopia, currently recoverable through femtosecond surgery; 3, 4.1 or less: 4.1 or less is generally 600 degrees or more, for severe myopia, also available for treatment by surgery. However, visual acuity and degrees cannot be accurately converted. Two people with the same visual acuity will have different corresponding degrees, and even if a person has the same visual acuity in both eyes, there will be differences in degrees. If myopia does not occur, do not blindly carry out prescription glasses, but if myopia occurs and requires prescription glasses, it is recommended to go to a professional institution for measurement and examination before wearing glasses suitable for you.