Blog

ICSI has helped many people conceive by allowing an embryologist to inject a single sperm directly into an egg. Yet standard ICSI relies on sperm assessment at lower magnification. IMSI uses a much higher level of magnification, allowing embryologists to inspect sperm structure in far greater detail before selecting one for injection.

That next step is where ICSI becomes central. Surgical sperm retrieval can collect sperm directly from the testicle or epididymis, but the sperm often cannot fertilise an egg through standard IVF on its own. In the laboratory, ICSI allows an embryologist to inject a single selected sperm into a mature egg. This can turn a small retrieved sample into a real chance of embryo development.