As the women age advances the number and quality of oocytes/eggs decreases.
Egg freezing is done in patients who want to preserve their fertility at young age and want to bear pregnancy later on. Eggs /Embroys are frozen at young age and they are thawed later on whenever the women desire pregnancy.
In this procedure hormonal injections are administered to stimulate ovaries, multiple eggs are collected under ultrasound guidance under anaesthesia. Good quality eggs are frozen which can be used later on for embryo formation.