Laser hatching

Laser hatching:

The egg is surrounded by a layer of protein sugar molecules called shingles. This layer protects the egg and the fetus, and after the fertilization stage, it is one of the factors that guide the fetus from the fallopian tube to the uterus, which prevents the embryonic cells from separating from each other. Normally, the fetus leaves the shell before penetrating the endometrium and can be replaced in the endometrium. This separation causes the fetus to stick to the wall and increase the chances of pregnancy. In cases where in vitro fertilization is performed, some factors prevent the thinning of the zona pellucida and its rupture due to enzymes. Laser hatching is a method in which laser beam is irradiated in a controlled manner to the zona pellucida, creating a gap that removes the embryo from the shell and facilitates implantation. This procedure is performed during fetal zygote or blastocyst.