Everyone is afraid of wearing glasses with the same thickness as a beer bottle, so the most frequently asked question when fitting glasses is: Is the lens made thick? At this point, the best place to buy eyeglasses recommends that you wear "high refractive index lenses" because they are "thin and light".

The abstract parameter in the eyeglasses lens name is called the refractive index. The higher the refractive index, the thinner the lens, and of course, the more expensive it is.

When choosing lenses, don't be intimidated by them. You can understand it this way: the larger the refractive index value, the flatter the front and back surfaces of the lens, and the thinner the lens thickness.

So, high refractive index=thin and light lenses=super comfortable wearing experience. To pursue a thin and light-fitting experience, you must choose high-refractive index lenses. It sounds fine!

But in reality, for people with low refractive index, the difference in thickness of the lenses produced is almost invisible regardless of the refractive index.

No matter how thin and light the high refractive index lenses are described by the merchants, you need to be clear that if the myopia degree is low, no matter what refractive index is chosen, the thickness of the lenses will be similar. So, as long as the degree is accurate, it's fine.

Because the size of the frame can also affect the feeling of different thicknesses of the lenses, the final choice between the two refractive indices that match the degree should be determined based on the style of the cheapest eyeglasses frame!

Everyone wants to wear lightweight glasses, but if they ignore the lens material and blindly pursue a high refractive index, their comfort will not be good. Therefore, there is no need to worry too much about refractive index!