Medical Freezing
There are several medical conditions where the disease itself or the treatment will likely accelerate the ovarian follicle depletion. In these cases, ovarian stimulation, egg collection followed by vitrification of egg is the primary option.
Social freezing
As society is evolving , more and more women are delaying childbearing to more advanced maternal age, when natural pregnancy rate is reduced and even conventional IVF may not be able to help me that time. This provides the ability to conceive years or decade(s) later as efficiently as at the time the fertility preservation (egg freezing) was performed.