It is a shuddhikriya meant for cleansing the eyes and for moulding the' sense silent in concentration. Sitting with a straight back, the eyes are constant on an body without winking until tears first step rolling down the cheeks. And inconsequential protest affection the flame of an oil lamp, or an image, or picture, or the packages 'AUM', would do. The device should be placed in string with the eyes at a distance of four to six feet. Conceivably the chief device is not to admit any specific target at all to gaze at. One should ethical stare in front at the wall without stirring the eye-balls or the eyelids. Before doing trataka one may life completed movements of the eyes without moving the mind in which the eye-balls are rolled up and down, sideways, and from corner to corner diagonally, repeating everyone movement four to six times. Headmost these movements should be prepared with unbarred eyes and then with the eye-lids closed. This gives employ to the eye muscles. It should be followed by Trataka. Trataka is said to adjust the eyes clear, doctor up sight, and remove eye troubles. It makes the everwandering faculty silent.
Basti
It is a shuddhlkriya for c1eansing the colon. Its enterprise is commensurate enema. One cannot bring about Bastl unless one knows how to assemble Nauli. A rubber tube approximately nine inches in length and with an inner paragraph as broad as to spare the slender finger to enter it, is basic for doing Basti. Captivating about a liter of disinfected flood in a bowl, one sits in Utkatasana, and inserts one objective of the cleaned and lubricated tube into the anus, passing about four inches length of the tube inside. Then dipping the other neb into the bowl, Nauli is done, which creates vacuum in the abdominal cavity, thereby sucking Some drench into the colon. Any more the mark of the tube is closed with the gratuity of a finger, and after relaxing the abdominal muscles for a while, Nauli is done again, at the duplicate eternity removing the finger from the heel of the tube. This allows some extra damp to speed into the colon. The procedure is repeated a third time. Then the tube is removed from the anus and the bowels are evacuated. So Basti is ace done in a toilet.
Basti is greater than enema in that it allows doctor to extent upto the ceacum, i.e., the induction of the broad gut and cleans the colon actual effectively.