First, the most common reason is that the glasses frame is too heavy. The weight of the shelf presses on two small stress points on the bridge of the nose, and of course the bridge of the nose will hurt. Buying a lighter spectacle frame will solve the problem.
Second, the uneven surface of the nose pad can also cause discomfort. The nose pad of glasses should be flat and gently attached to the skin on the surface of the nose. If this position is not properly adjusted and tilted to one side, the weight of the glasses will press on a certain point of the nose pad, and serious skin damage will occur in the contact area.
Third, it depends on whether the bending position of the mirror foot has been adjusted. The position where the glasses feet bend is the position where the glasses feet hook the ears. If the bending position is too large, or the bending position is too forward, the whole position will be stuck back after the glasses are put on, just pressing on the bridge of the nose, which will cause the phenomenon of pressing the nose.
Finally, I must choose the right frame according to my head shape and pupil distance. It is suggested to go to the optical shop to check the parameters of the comfortable glasses you used to wear, or measure the size that suits you with a ruler and try them on repeatedly until you feel comfortable. Don't choose oversized glasses for the sake of beauty and fashion, because glasses may be deformed if they are adjusted too much, and uncomfortable to wear may also affect your eyesight.