What are the causes, symptoms, and solutions of Muscae Volitantes? Causes of Myodesopsia/Muscae Volitantes Muscae Volitantes is just a fancy term for what most people refer to as "floaters" in the eyes. These are those small, seemingly drifting specks or cobweb-like shapes that you might notice in your field of vision. They're usually caused by tiny bits of debris or clumps of gel-like substance..