Conventional IVF This is where sperm are added to a culture dish containing eggs in order to fertilize them. As opposed to ICSI where sperm are injected into an egg using a needle. Related Articles: Complete guide to egg qualityComplete guide to sperm qualityGlossary: Total fertilization failureCumulative live birth rates after multiple IVF cyclesCommon practices of high-performing IVF clinics (2016-2017)