Discount eyeglasses online lens matching is becoming increasingly common, but there are always many people who encounter various problems after purchasing: even though they buy high refractive indices, how can they still get them so thick? Why is it so uncomfortable wearing it?

Firstly, we need to know which factors affect the thickness of the lens. It is well known that the higher the degree, the thicker the lens thickness. The higher the refractive index, the thinner the lens. (Insert a mouthful, not the thinner the lens, the better. This is a big misconception.)

Everyone understands the size of the frame, and most lenses are thicker on both sides. From this, it can be concluded that the larger the frame, the thicker the edge. The ideal cheapest eyeglasses online frame size should be chosen as follows: frame width+nose bridge width=pupil distance. (Data such as mirror width and nose width are available on the frame.)

So why is the thickness of the lens affected by this? Because most lenses are thin in the middle and thick on both sides. If the width of the lens and the height of the nose are exactly equal to the distance between the pupils, then the thinnest part of this pair of glasses is at the center. Otherwise, there will be displacement, causing the lens to be taken away from the center position (i.e. thicker areas) when using.

The material of the lenses is self-evident. Why are some people's lenses thin and some people's lenses thick for the same degree of glasses? This is partly due to the astigmatism coefficient.

What's going on when we say that wearing glasses with eyeglass online accessories feels particularly uncomfortable? When the degree of glasses is incorrect, wearing them naturally feels uncomfortable. If the pupil distance of the glasses is not done correctly, it can also be uncomfortable.