A suture according to an embodiment of the present invention is a suture that is sewn with a subject&primes eyelid and gives rise to artificial folding in the subject&primes eyelid. The present invention includes: a yarn portion formed with a first cross-sectional area and not absorbed into the human body a convex portion placed along the yarn portion at a distance from the yarn portion, formed with a second cross-sectional area exceeding the first cross-sectional area of the yarn portion, and provided with a plurality of projections and a coating portion absorbed into the human body, coating the yarn portion and the convex portion such that the subject&primes eyelid is not caught by a step attributable to the difference in cross-sectional area between the yarn portion and the convex portion in a case where the yarn portion and the convex portion are inserted into the subject&primes eyelid, the catching hindering the insertion of the yarn portion and the convex portion into the subject&primes eyelid and the coating preventing the hindrance to the insertion, and facilitating the insertion by reducing the step. The coating portion is absorbed into the subject&primes human body a certain period of time after the yarn portion and the convex portion are placed on the subject&primes eyelid. Once the coating portion is absorbed into the subject&primes human body, the convex portion is exposed in the subject&primes eyelid tissue and forms a projection penetrating the subject&primes eyelid tissue. As a result, a positional movement of the yarn portion in the subject&primes eyelid tissue can be prevented.COPYRIGHT KIPO 2017본 발명의 일 실시예에 따른 봉합사는, 피시술자 눈꺼풀에 꿰매져, 상기 피시술자 눈꺼풀에 인위적인 접힘이 생기도록 하는 봉합사에 있어서, 인체 내에서 흡수되지 않고, 제1 단면적으로 형성되는 원사부, 상기 원사부를 따라 이격되어 배치되며 상기 원사부의 상기 제1 단면적보다 큰 제2 단면적으로 형성되는 복수의 돌기를 구비하는 볼록부 및 인체 내에 흡수되고, 상기 원사부 및 상기 볼록부가 상기 피시술자 눈꺼풀에 삽입되는 경우 상기 원사부와 상기 볼록부의 단면적 차이에 따른 단차에 상기 피시술자 눈꺼풀이 걸리게 되어 상기 삽입이 용이하지 않게 되는 것을 방지하도록 상기 원사부 및 상기 볼록부에 코팅되어 상기 단차를 줄임으로써 상기 삽입을 용
