Ocular floating phenomenon: colorless and transparent colloid filling the posterior 4/5 cavity of the eye, mainly with collagen fibrils and a colloid composed of 98.5%-99.7% water. The vitreous itself is not vascular, metabolism is very low, its nutrition from the choroid and atrial aqueous. The vitreous body is susceptible to various physical, chemical, trauma, inflammatory-like disease, degenerative degeneration, etc., decomposition occurs, the phenomenon of liquefaction. It is manifested as floaters in various forms such as dotted, linear, and cobweb-like in front of the eye, and floats up and down with the eye movement. So, what is the cause of the floating eye phenomenon? Here is a look together. 1, the vitreous body is non-vascular tissue, vitreous inflammation are caused by the spread of inflammation of surrounding tissues. Such as iridocyclitis, retinal choroidal lesions. Inflammatory tissue exudate, inflammatory cells, necrotic tissue and pigment particles, phagocytes attached to the vitreous fiber tissue and produce many different types of clouding performance. 2, blunt contusion of the eye, penetrating injuries often have intraocular hemorrhage and cause clouding. Intraocular foreign bodies and secondary infections also lead to clouding. 3. With age, vitreous humor gradually degenerates. It is expressed as condensation and liquefaction. The condensed part has high density and can have flocculent, filiform, colorless and transparent cloudy material. The liquefaction sites disintegrate the vitreous structure and form fluid-filled voids. This type of vitreous opacity is more common in high myopia and in the elderly, and is mostly unchanged over time and does not affect vision.