There has been continued refinement and understanding in the concepts of Asian blepharoplasty. Among Asians, aesthetic upper eyelid surgery to convert a creaseless upper eyelid (popularly referred to as "single eyelid") to one with a crease ("double eyelid") is the most frequently performed cosmetic surgery in Asia and among Asians living in the Western hemisphere. I have discussed my understanding of the concept of this surgery, utilizing a tarsal height-based external incision method plus assymmetrical debulking of the preaponeurotic tissues, including some fat, septum orbitale, pretarsal and preseptal orbicularis oculi muscles, and preseptal skin.