She came from school in the afternoon and woke up with redness in one eye and was not able to open the eye due to the formation of rheum.
Advised them to take 30 seeds of coriander (Dhanyaka in Sanskrit). Tie it in a small cloth (kizhi like), immerse it in 200 ml of water and boil. The water turns golden yellow. Wait for it to cool and add a teaspoon of honey to it.
Take the tied cloth, dip in the decoction and squeeze into both eyes of the child. Do this till the decoction gets over. It will take about 10 minutes.
The child woke up in the morning with clear eyes.
This has been tried and tested for centuries. You can also make it by directly dropping the seeds in the water and boiling it. But filtering it before pouring in the eyes is a task. So I've made it easier by tying it in a cloth.