I had non-double-eyelid ptosis correction at ㅅㅍㄹㅅ Plastic Surgery in Apgujeong last year. The director did the consultation, and I am very satisfied with the result.
They even said after finishing that it might be okay to make a slight adjustment, so they pulled my left eye a bit more to match it. They cared for me until the end, and the result was good, so I am satisfied.