Assisted zona hatching

Assisted zona hatching (AZH) is a procedure of assisted reproductive technology ,mainly used in IVF, in which a small hole is made in the zona pellucida. It can be done using different methods including mechanical, chemical or by the use of lasers, thereby facilitating zona hatching.^[1] Zona hatching is where the blastocyst gets rid of the surrounding zona pellucida to be able to implant in the uterus.