Everyone knows that some people's double eyelids are not obvious, and the double eyelids are completely formed because of the extra skin of the eyelids. Therefore, if people are tired and the eyelid skin is slack, they will form double eyelids, and when the eyelid skin is tight, they will become single eyelids! The principle of getting up the next day after drinking water is estimated to be the same as that of getting up the next day after eating too much at night. Once the eyes are swollen, the skin of the eyelids becomes tight and becomes a single eyelid! The eyelid shapes of China residents can be divided into three types: single eyelid (single eyelid), double eyelid (double eyelid) and multilayer double eyelid. According to the elasticity and relaxation degree of the upper eyelid skin, it can be divided into three types. 1. Positive force type: the upper eyelid skin has no relaxation, good elasticity and moderate subcutaneous fat filling, which is more common in young people; 2. Weak type: the upper eyelid skin is slack, with poor elasticity and scarce subcutaneous fat, which is more common in middle-aged and elderly people; 3. Super-force type: the eyelid skin is tense and bright, and the fat at this moment is over-filled and swollen, commonly known as "puffy eyes" and "puffy eyes". Generally speaking, anyone who is born with a single eyelid and requires a double eyelid can be a double eyelid surgery as long as he has no serious internal diseases and is mentally normal. People with long eye fissure, thin eyelid skin and high nose bridge have good surgical effect. If one eyelid is a double eyelid and the other is a single eyelid, the operation can make both sides symmetrical on the basis of one side of the double eyelid. Some people's double eyelids are not obvious when they open their eyes, which is called "invisible double eyelids". If you perform surgery, you can form wider double eyelids, and the effect is often good. Some middle-aged and elderly people, with drooping upper eyelid skin, often lack aesthetic feeling, which will also affect their eyesight and often have a sense of double eyelid. Being a double eyelid surgery can make your eyes young, reduce discomfort and improve your eyesight. Some special eye types, such as narrow eyes, squint eyes, triangular eyes, large and small eyes and splayed eyes, can be corrected by surgery. For people with low nose bridge, wide eye distance, small eye fissure and single eyelid, double eyelid surgery and rhinoplasty can greatly improve their appearance. Double eyelid surgery has been done before, but the effect is not satisfactory, or the double eyelid line disappears, so you can have another operation. In addition, some eye diseases, such as "ciliary entropion" and ptosis, can kill two birds with one stone while undergoing corrective treatment, achieving dual purposes. The above operations are generally suitable for people over 16 years old. When making double eyelids, you should carefully choose the plastic surgery institution. When choosing plastic surgery institutions, we must pay attention to the medical environment of the hospital and the level of attending doctors. If the landlord is interested in learning more about double eyelid surgery, he can learn by reading relevant articles. This is a very professional website of double eyelid surgery and eye plastic surgery in China. There are many articles about double eyelid surgery for users to read, and users who enter this website can also consult online!