IVF or ICSI, who chooses the technique to be applied in each case and how?

Although until relatively recently the ICSI technique in in vitro fertilization was considered an "extra" (even generating an added cost), today most assisted reproduction laboratories to consider it as one more part of their therapeutic tools. Thus, the team of doctors and embryologists are the ones who usually decide on its use, depending on different criteria, such as quantity and quality of the oocytes obtained, age of the patient, previous decumulation process (to evaluate the maturity of the oocyte extracted), causes of sterility, etc.