Intracytoplasmic sperm injection (ICSI) is an ART involving the injection of a single sperm into the cytoplasm of an oocyte to achieve fertilization. It is mainly performed for the treatment of couples with male factor infertility and those with poor fertilization with conventional IVF.
ICSI is the only treatment option for couples with severe male factor infertility. It can be performed with ejaculated or surgically retrieved sperm.
