in vitro fertilization in vitro fertilization with intracytoplasmic sperm injection and donor egg http://purl.bioontology.org/ontology/SNOMEDCT/426914002 An assisted fertilization technique consisting of the microinjection of a single viable sperm into an extracted ovum. It is used principally to overcome low sperm count, low sperm motility, inability of sperm to penetrate the egg, or other conditions related to infertility in persons with sperm. in vitro fertilization using donor egg and intracytoplasmic sperm injection