I've been doing research on the types of double eyelid surgery but there are still some things I don't understand. I have several questions:

1. I heard that non-incision double eyelid surgery only lasts about 1-10 years. So I was wondering if non-incisional/natural adhesion is performed with ptosis correction, does that mean the lid will last longer or will it be permanent? 

2. How long does the lid for partial incision last? Will the lid unfold after several years or it is permanent like incisional? 

3. Is the scar visible with partial incision?

Might be a lot but I would love it if someone could answer the questions I have :)

Thank you!