An Overview of the Available Methods for Morphological Scoring of Pre-Implantation Embryos in in Vitro Fertilization

Assessment of embryo quality in order to choose the embryos that most likely result inpregnancy is the critical goal in assisted reproductive technologies (art). the currenttrend in human in vitro fertilization/embryo transfer (ivf/et) protocols is to decrease therate of multiple pregnancies after multiple embryo transfer with maintaining the pregnancyrate at admissible levels (according to laboratory standards). assessment of morphologicalfeathers as a reliable non-invasive method that provides valuable information in predictionof ivf/intra cytoplasmic sperm injection (icsi) outcome has been frequently proposedin recent years. this article describes the current status of morphological embryo evaluationat different pre-implantation stages.