Direction of use: The eye is the element of agni. So, it is susceptible to vitiated kapha. Therefore, measures that pacify kapha are beneficial for keeping the vision clear.
Strong collyrium shall not be applied to the eyes during daytime as the eyes already weakened by drainage will get impaired further on exposure to sunshine.
धौतानां निर्मला शुद्धिस्तैलचेलकचादिभिः| एवं नेत्रेषु मर्त्यानामञ्जनाश्च्योतनादिभिः ||१९||
Just as various kinds of tarnished gold-ornaments get cleansed by washing with oil, cloth and hair also, by the use of salves, aspersions in the eyes, the vision of a person shines brightly like moon in the clear sky.
[Dhumapana (Inhalation of smoke/vapors), its types, directions of use and indications] 1. Prayogika dhumapana (therapeutic inhalation for prevention of disease): Harenuka (Pisum sativum L. ), priyangu (Callicarpa macrophylla Vahl ),prithvika ( Amomum subulatum Roxb.), kesara(Crocus Sativus L.),nakha( Ipomoea Pes-tigridis L.),