Well, yes, your friend is right, eye floaters can be harmful and you do not need to be too worried about it. And floaters are basically little blobs of protein that float through the hollow sphere which is filled with a thick, gel like fluid known as the vitreous humor. Eye floaters occur to many people, and it can be normal. But on the other hand, when you have too much eye floaters, it can be annoying and ugly to have them. For the treatments, some essential oil, such as tansy, sandalwood, juniper, lavender can be effective. Also, proper nutrition can prevent new eye floaters. By the way, just eat as many water and vitamin rich vegetables as possible. That can do a help to eye floaters too.