I don't know about the incision, but non-incision is not about cutting the flesh but rather pulling it, so the area under the eyes gets thicker and if I just stay still it's fine, but when I smile it's really thick... I think it's because I have thick skin.
 If you have thick skin, consider non-incision lower
 eyelid surgery carefully. I've also had non-incision double eyelid surgery, but it's really not noticeable (which means it's ineffective..)