Well, yes, ice can be helpful to treat red eyes. And first, you need know that red eyes can be caused by many factors, such as virus, irritants, bacteria. And then your eyes can not only be red, but also have puffiness, swelling symptoms too. At this moment, so you can have some cold compresses, and put some cool ice or cool cucumbers on your eyes. And that can be effective. Also, according to some experts, we can also use milk to protect our eyes, especially for red eyes. For example, you can just get a soft cloth with cool milk, and then put the cloth under your eyes. Anyway, just be careful about it.