ICSI (Intracytoplasmic Sperm Injection) is a specialized form of in vitro fertilization (IVF) used to treat male infertility. It involves injecting a single sperm directly into an egg to facilitate fertilization. ICSI is beneficial when the male partner has low sperm count, poor sperm motility, or abnormal sperm morphology. By bypassing natural barriers to fertilization, ICSI increases the chances of successful fertilization and subsequent pregnancy for couples struggling with male infertility.