In vitro fertilization involves fertilizing the gametes outsides human body.

It is indicated in
1. Blocked tubes
2. Severe male factor (OATS)
3. Surgically retrieved sperms
4. Endometriosis grade III & IV
5. Unexplained
6. Egg donation / Surrogacy
7. Severe PCOD

Steps of IVF
a. Stimulation of ovaries to make multiple eggs
b. Egg retrieval
c. Fertilization of egg with sperm
d. Incubation of embryo
e. Embryo Transfer

Success rate is 40-45% per cycle in women younger than 35 years of age. However, the chances of success reduce with advancing age.