What kind of eye disease is vitreous hemorrhage and how is it treated? To treat retinal disease, we must first remove the vitreous body It is well known that the human eye is a delicate organ composed of many parts, of which the vitreous body is the most important component that fills the contents of our eye. The vitreous body has a crystal clear appearance, like ice crystals, and its composition is overwhelmingly aqueous, but unlike water, it is not fluid and is histologically defined as a three-dimensional structure of woven collagen fibers punctuated by large amounts of sodium hyaluronate, making it more strictly speaking a solid. Vitreous hemosiderosis is a fundus lesion caused by many diseases and is not an independent disease. Retinal vascular disease, ocular trauma, surgery and some systemic disorders are the main causes of vitreous hemorrhage. For example, hypertension can aggravate fundus vasculopathy and increase the likelihood of fundus hemorrhage. Since the vitreous body is closely adherent to very important structures in the eye such as the retina and ciliary body, especially in abnormal conditions such as retinal lattice-like degeneration can be even closer, removal of the vitreous body is the first and very critical step in the surgical treatment of retinal diseases. Vitrectomy is the most delicate procedure in ophthalmology Vitrectomy is like a silkworm gnawing on a mulberry leaf, removing it in one bite. A thin metal tube is inserted into the eye during surgery, and a small portion of vitreous is drawn into the incision by negative pressure. Then a back-and-forth moving intrusion needle inside the tube removes the aspirated vitreous, and little by little the vitreous is removed, week by week. With Kasner’s invention of vitrectomy (or biosection for short) in 1962, it has become the most delicate and complex procedure in ophthalmology today. In eye hospitals in developed countries, vitreous surgery has become the second major procedure after cataract surgery, enabling tens of thousands of patients to regain their sight by performing vitrectomy. Vitrectomy is the most effective treatment for severe vitreous and retinal pathologies. Vitreoretinal disease is the most serious disease of the eye, and its good outcome requires both sophisticated surgical equipment and a highly skilled and responsible surgeon. The recovery time after minimally invasive vitreous surgery also depends on the length of time the patient has had the disease. Retinal detachment, diabetic retinal disease, macular fissure anterior membrane and other blindness-causing eye diseases should be treated early, do not wait until you can not see before consulting; and do not be afraid of surgery to refuse treatment, because the current surgical methods can be completely painless and minimally invasive.