LAH (Laser Assisted Hatching)

LAH is an advanced technique used when the zona pellucida or the covering of the eggs are thicker than usual. The excessive thickening is believed by many scientists to result in lower chances of implantation which lowers the chances of pregnancy. With the help of a laser, the zona is thinned out at one place, to ease hatching of the embryo, hence improving implantation and pregnancy rates.