Sperm gather in the tiny pockets found inside the testicles. Using an operating microscope, these pockets are removed from the testicles. After that, the lab opens these pockets to release the sperm, which can then be utilized for the IVF/ICSI procedure. Those with non-obstructive azoospermia (NOA), or the lack of sperm in the semen, benefit greatly from micro TESE.