IVF is probably the most common form of fertility treatment used today. IVF stands for In Vitro Fertilisation. The IVF process involves the fertilisation of the egg with sperm in a Petri dish, within the controlled environment of a laboratory. The time it takes to fertilise the eggs is dependent upon the quality and number of eggs although it can vary from three to five days before they are transferred back to the patient.
Within IVF treatment the woman normally undertakes a course of drugs that encourage the ovaries to produce healthy eggs for fertilisation. The length of the course is dependent upon the patient's hormonal response. You can explore this link if you are looking for fertility treatment.
Image Source: Google
ICSI – Intra Cytoplasmic Sperm Injection
ICSI is similar to IVF in a number of ways, for example, it is also wholly performed in the laboratory, although predominantly the process is used to treat male infertility problems rather than females.
In contrast to IVF where the sperm and the egg are left to fertilise naturally, the sperm is inserted directly into the egg in order to assist the fertilisation process. The man's sperm sample is provided fresh, typically on the same day as the treatment and is washed and prepared before the injection begins. Once again, the embryos are left to fertilise before being injected back into the woman.