The Egg Freezing Process is administered similarly to the In Vitro Fertilization (IVF) fertility treatment. Please visit In Vitro Fertilization (IVF): The Process for information on the Egg Preservation treatment. Please reference up to Egg Development. During In Vitro Fertilization (IVF), the female patient has the option to transfer all embryos. In the Egg Preservation treatment, the maturity of the eggs are assessed under the microscope, and those that are mature are cryopreserved.