Intracytoplasmic Morphologically Selected Sperm Injection (IMSI) is a sperm injection (ICSI) of a specially selected single sperm directly into the mature egg. IMSI is a new and relatively unstudied technique. Sperm often have abnormally shaped heads and often have vacuoles (cavities) and it is believed that these abnormal sperm are less likely to carry normal genetic material. IMSI use high power magnification to identify these abnormalities of sperm, therefore select the most normal looking sperm. Because sperm are so tiny compared to the egg, special high power magnification is required. This is a treatment option if the male has

• poor sperm motility

• poor sperm morphology

• a low sperm count

• surgically recovered sperm.