Vitrified egg cells do not necessarily lose their quality. However, it is different if the quality of the oocyte before vitrification is not the best. If the oocyte is not of good quality, the freezing and thawing process can obviously damage it.
If they are good quality oocytes, there is no reason why there should be any kind of problem. It depends more on the quality of the egg before being frozen than on the freezing technique itself.
Read the full article on: What is meant by egg vitrification and what are its advantages? ( 58).

Laura Molina Sotomayor
Laura Molina is currently a biologist at the Ginemed center in Jerez. Laura studied Biology at the University of Granada, where she also did a Master's Degree in Clinical Analysis. In addition, Laura has a PhD course in Human Genetics and a Master's Degree in Human Reproduction from the Complutense University of Madrid.