In vitro fertilization (IVF) is a process where embryos are created externally to the body and grown in a laboratory to optimize success and minimize variables that prevent conception.  
 
Doing IVF to minimize the chance of having a child with a genetic disorder is the same process as doing IVF for infertility. The IVF process can be used for fertility purposes as well as minimizing the chance of having a child with a genetic disorder. The difference is that individuals or couples with infertility try less expensive means of getting pregnant first. Individuals or couples doing IVF for genetic reasons skip straight to IVF where embryos can be tested for a genetic issue.