Nowadays, almost all lenses on the eyeglass mart have an anti-radiation film layer. However, the radiation protection effect of the lens is only within the lens range, and electromagnetic waves do not propagate completely in a straight line.
Talk about anti-blue light. Anti-blue light is the most popular lens function in recent years on eyeglass mart. For people who have used computers or electronic display devices for a long time, the function of anti-blue light lenses can currently be certain to block some harmful blue light from causing harm to the eyes, making it more comfortable for the eyes to work in front of computer screens.
In addition to the above functions, there are also many functional lenses on the eyeglass mart, which vary greatly in price due to their different processing techniques and materials. But when we choose, we must remember that if it is not expensive and has multiple functions, it is good. It is also possible that the eyes are not suitable for such lenses, so what suits oneself is the best.
Resin and PC lenses are usually coated on the lens to compensate for some physical defects of the optical lens itself or enhance its performance. Moreover, most myopia lenses are coated with multiple layers of film, allowing them to have multiple characteristics simultaneously. The bottom layer of the lens substrate is the optical lens mentioned above, while the other nine layers are coated with various functions.
If choosing the optical lens part of myopia lenses is a balance between the thickness of the lens and the imaging quality, then choosing the coating part of the lens is basically choosing a brand.
As an ordinary consumer, there is not much we can do here. We can only understand in advance which membranes are usually necessary, and ultimately choose the necessary membranes according to our budget.
