01. There are three main reason of scar after the double eyelid surgery.
First one is physical condition of each patient. Some people are Keloid, which means when your new skin grows, the surface is being rugged. In this case, not related with doctor’s skill or method, there will be a scar.
Secondly, if the doctor’s skill was not enough, so that the suture was not in detail, otherwise if you stitch out too late than suggested time, you might have a scar. And, if the suture of the muscle which makes your eye open, or if your incision on the skin was not attached exactly, you might suffer from rugged skin surface.
The schedule about when you have a stitch out is also important as much as the skill of suturing. If you remove your stitch too early, the skin will enact, and you might have a mark on the stitched area.
Thirdly, if you have an infection during the recovering period, it might leave a scar. The skin of eyelid is usually metabolic changes well, so usually there is no infection, but after your surgery if you drink alcohol, smoking or have a contact with infected product, possible you will have an infection.