Well, yes, rose water can help to treat pink eye, so you can just have a try. And generally speaking, pink eye is a common eye infection which occurs in both adults and kids. And also, the infection normally occurs during rainy and wet season. When it occurs, redness and swelling in the eyes can be possible. At this moment, you should have some ways to treat it. For example, you can just try rose water. And first, you should take 100 grams of rose petals and wash them thoroughly under running water. And then, put the rose petals in boiling water and cover the vessel for 5 minutes. And then just remove the vessel from the flame and allow the solution to cool. And then just apply rose water directly on your eyes. And that can be effective. Also, cucumber can be another good way too.