Netra means eye and tarpan means giving strength to the eyes. The medicated clarified butter is poured over the eyelids in an enclosure built around the eye. It is said to be an excellent treatment to improve vision and clarity of mind. It relieves tiredness and improves eyesight. It is highly recommended for people who regularly work at computers, operate machinery, drive for long periods or anyone who is currently suffering from tired, aching and sore eyes.