Eyelid opening has the effect of widening the field of vision, making the eyes bigger and more attractive. Most East Asians have the problem of medial canthus, i.e., there is excess skin at the inner corner of the eye, which partially obscures the corner of the eye, making the eye look smaller, and the person also appears to be less energetic and less flexible. If the excess skin is surgically removed, the patient will feel that the field of vision is more open and the eyes will appear larger, more flexible and more alert. If the inner canthus is not opened when double eyelid surgery is performed, a crease may form at the inner corner of the eye after the surgery, affecting the aesthetic appearance. If there is inner canthus, it is recommended to do both double eyelid and eye opening at the same time when doing double eyelid surgery, which can avoid this problem, and after eye opening the inner side of the eye lacrimal caruncle, the white eyeballs are exposed more, and the length of the eyes is increased, which makes the eyes look more spiritual. For people with smaller eyes, wider distance between inner canthus and ptosis, both inner and outer corners of the eyes can be opened to correct the ptosis, which will make the eyes bigger and more beautiful, and the distance between the inner corners of the eyes will be shortened more. However, when opening the corners of the eyes, it is important to note that there is no need to overdo it, otherwise the tear trough will be exposed too much or the eyelids will recede, which will make the eyes look less beautiful and affect the function of the eyes.