'Tratak' is a type of meditation which is basically practiced for growing eye power and hence it helps a meditator to grow his hypnotising capacity.
There are all total almost 10 types of tratak, out of which it is one of the effective one. In this type of meditation, one has to light up a lamp (candle or anything else) and give up the full concentration of his eyes to the flame without closing the eyes. At first day we should have to try to focus for at least for 2 to 3 minutes and day by day we can grow the time limit.
#NB: Don't try it without assuming a guru(master), don't try without a proper knowledge.
tratak meditation hypnosis