Copper is macerated on iron (plate) using cow urine (a copper tumbler is rubbed on a flat iron pan using cow urine as medium and the resulting paste collected); applied as collyrium into the eye which has been exposed to the fumes of ghee; it kills pain. Dadhisara (solid of curds) prepared from cow milk rubbed on copper and applied to the eye mixed with little quantity of kṛṣṇā – Piper nigrum and rock salt is best to relieve pain of the eye.
Copper is macerated on iron (plate) using cow urine (a copper tumbler is rubbed on a flat iron pan using cow urine as medium and the resulting paste collected); applied as collyrium into the eye which has been exposed to the fumes of ghee; it kills pain. Dadhisara (solid of curds) prepared from cow milk rubbed on copper and applied to the eye mixed with little quantity of kṛṣṇā – Piper nigrum and rock salt is best to relieve pain of the eye.