The study found that the birth defect rate of IVF is about 9%, and that of naturally conceived infants is about 6.6%. The proportion of eye defects of these two parts of infants is 0.3% and 0.2%, the proportion of cardiac abnormalities is 5% and 3%, and the proportion of reproductive system defects is 1.5% and 1%, respectively. 
it can be explained that the birth defect rate of IVF is higher than that of naturally conceived infants.
IVF can produce many fertilized eggs during in vitro fertilization, and only the best ones are selected to the mother for pregnancy