Generally speaking, double eyelid surgery won't leave obvious scars, but when the surgical wound is poorly healed, resulting in bleeding and hematoma, wound or needle eye infection and dehiscence, obvious scars may be formed. Especially when the double eyelids need to be reshaped for various reasons after the first operation, the chance of scar left by the incision will be greatly increased, and the more times of repair, the higher the chance of scar.