In general, most people can achieve a more natural condition with a 7mm eyelid width after a period of recovery. However, the exact condition to which a 7mm width eyelid can finally recover depends on the patient’s upper eyelid skin laxity, age, and personal constitution. The width of the eyelid is usually designed before the surgery, based on the development of the patient’s eyes, the laxity of the upper lid skin, the patient’s age, and the patient’s own wishes, and after communication to determine the appropriate width of the eyelid. The width of the eyelid is usually 7mm, which is the distance from the root of the eyelashes to the incision line when the eyes are closed, and is suitable for most people’s facial conditions. However, if the design is not correct and the surgery is not performed properly, it is possible that the 7mm eyelid design may become bilaterally asymmetrical, such as one side becoming lighter or disappearing, and in severe cases, it may need to be repaired again to achieve a consistent bilateral appearance. In addition, when there is a surgical incision on the upper lid, there may be scar growth, so it is important to apply anti-scar medication early to minimize the formation of wound scar. Some people may develop multiple layers of folds in the later stages of double eyelid surgery, and will need to have the outer orbital septum fat released and filled into the middle of the fold through another surgery or have the autologous free granular fat transplanted to address the appearance of multiple layers of folded heavy lids for a better improvement.