Well, yes, it is possible to have eye floaters because of mono. Generally speaking, mono is a kind of very common viral illness. When it occurs, fatigue and lack of energy, fever, headache, and general malaise can be possible. On the other hand, it can also affect your eyes, leading to some eye problems, such as eye floaters, and red eyes. For eye floaters, they 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. To treat it, some essential oil, such as tansy, sandalwood, juniper, lavender can be effective. Also, proper nutrition such as vitamin rich vegetables can prevent new eye floaters. So just have a try.