It involves injecting a single sperm into each egg, in the lab to try and achieve fertilisation. The earlier part of the treatment including ovarian stimulation and egg retrieval is the same as in IVF.
ICSI is useful when:
- The sperm sample contains decreased numbers of sperm, reduced movement or there is a higher number of abnormal sperm.
- The male partner has no sperm during his ejaculation but sperm can be obtained from the testicles, by surgery
- The male partner produces high levels of antibodies against his own sperm which affects the ability of the sperm to bind to the egg
- Couples have already had IVF treatment but had unexplained failed fertilisation of all the eggs or low fertilisation
- The male partner has retrograde ejaculation, where the sperm passes backwards into the bladder and is found in urine