This technique is similar to the injection of hyaluronic acids, but it needs to extract fats from other body parts ( through liposuction), which after purification are injected to the ocular socket depression site after purification of fats. The injection needs only a small needle, so no scar will be noticedform.. However, due to the probability of fat absorption, the self-absorption ratedegree differs along with individual physical conditions, and it is hard to predict the results; therefore, Dr. Chuang injects abundant fats during the surgery to offset probable absorption. The recovery of this surgery is slower than the filler injection. Patients usually have eyelid swelling, heaviness, or even palpable lumps for 1–-2 months postoperatively, which requires aboutover 3 months to attain for natural and stable results to be completely regained. Nevertheless, the average viability rate of fats injected at the ocular socket amounts to over 50%, so if up to standards, it sustains the results for approximately 3–5 years and does not require management within the short term. Its drawbacks are that the surgical results are difficult to be predicted and evaluated and that it is not suitable for patients already having eyelid laxity, which is prone to aggravating ptosis due to postoperative fat downward compression postoperatively.