Testicles have small pockets that have a group of sperm inside them. These pockets are taken out of the testicles by using the operating microscope. These pockets are then opened in the lab to set the sperm free, which can be further used for the IVF/ICSI process. Micro TESE is a boon for those who have non-obstructive azoospermia (NOA), which means the absence of sperm in the semen.