After selecting the material, choose the discountglasses frame you like, but be sure to match the width of the frame with the distance between the pupils. Whether it matches or not will be informed when fitting glasses. When the eyes are not moving, the optical center of the assembled glasses should be facing the center of the wearer's pupil.

Choose a frame with thicker edges instead of a frame with thin edges, as this thickness can cover up more, which will improve the visual experience and make it more comfortable to look at psychologically.

Abbe number is commonly used in the lens eyeglass mart and is one of the reference factors for lens selection. Currently, the Abbe number of optical lens materials used for the eye is between 30 and 60. The Abbe number of lenses for human wearing should not be less than 30, otherwise, obvious dispersion phenomena may cause visual blurring and discomfort for the wearer.

The symptom of myopia is that it is clear to see objects close up, but blurry to see objects far away. Therefore, there is a saying that people with mild myopia need to wear glasses when viewing distant objects, while when viewing nearby objects such as reading or writing, they do not need to wear glasses, which is called "wearing far and taking off near". So, if you are nearsighted, can you wear and take off glasses?

Firstly, it needs to be clarified that the term 'wearing and removing' here refers to mild myopia (less than 300 degrees). Myopic glasses must be worn if myopia exceeds 300 degrees or there is astigmatism.

Although glasses for individuals with mild myopia can be worn and removed, there must be a traceable pattern of when and when to wear them. Obviously, "wearing far and removing near" is not feasible.