First, the external suture was not completely removed. If there is, go to the hospital and take it out with a microscope.

Second, the internal suture is leaking, which is normal. You can also go to the hospital to take out the leaked suture with a microscope.

Double eyelid incision just started with thread because it can't form scar at first, and it needs to use the force of thread to fix the tissue to the required position, but in the later stage, the thread is useless and bonded by the force of scar.

Just take out the leaked ones. You don't have to worry too much, because the scar has been formed since the third day.

Just like when you cut your hand, you need to sew it with thread at first, but after a week, the wound will heal. It is useless to thread at this time, and it needs to be removed.

There is no need to remove the inside line of double eyelids. If the thread leaks, take it out.