The partial zona dissection is recommended for women that have eggs with a shell that is too hard or difficult to penetrate. The shell is an accumulation of proteins that can be harder in certain women. The shell can harden also due to egg freezing.

The PZD is a miniature surgery that will cut into the egg, making the fertilization more likely. The PZD will be performed prior to adding the sperm to the egg.

Recovery time: N/A