#vitreoretinal

About 4/5 of the human eyeball is composed of the vitreous body. The composition of the whole vitreous body is 99% water, 1% collagen, and normally shows a transparent gel state (like a jelly). Therefore vitreous body is the liquids and some fibrous tissue which fill our eyes, that is, the space between the lens and the retina. The vitreous body will never be replenished, so the vitreous is non-renewable. When a vitreoretinal disease occurs, the natural vitreous body must be surgically removed and filled with a suitable artificial vitreous substitute.

At present, the commonly used fillers in the clinic mainly include air, inert gas, heavy water, silicone oil, heavy silicone oil and the like. However, long-term silicone oil filling can easily lead to a series of postoperative complications such as complicated cataracts, secondary glaucoma, corneal degeneration, silicone oil emulsification, and even migration to the subretinal and optic nerves, resulting in loss of myelin in the optic nerve fibers, resulting in permanent loss of vision.  

So we now have a better product that can support the vitreous substitute of the retina for the lifetime -FCVB

The  retinal detachment (CD) is a split between the pigment epithelium and neurosensory retina, often from a retinal tear. This tear is favored by myopia, aphakia or pseudophakia (eye without lens after cataract extraction), ocular trauma. The tear is manifested by the perception of light flashes (phosphères) that should alert and quickly lead to an eye examination. A black veil amputating the visual field, reduced visual acuity are the signs of DR constituted. For treatment, one can speak of a cure that is only surgical, it must be done quickly to avoid the extension of the detachment and the appearance of fibrous retractions vitreous (PVE: vitreoretinal proliferation). Reached a DR patient should be referred quickly to the posterior segment surgeon and have a preoperative assessment. It must be kept quiet to avoid further spread of the uprising. The surgery should be performed within 7 days, if the macula is still flat. It is performed under general or local anesthesia. For the simple DR, must be sealed tear reapplying both retina detached leaves. This is done mostly through the installation of a sciérale indentation. For DR complicated, it uses intraocular surgery, very sophisticated. We can also talk of preventive treatment; Laser photocoagulation of predisposing lesions before the stage of detachment. When the patient is seen at the stage of tear without peeling, tearing can be coagulated without surgery by laser photocoagulation. Hence the value of the systematic review of risk subjects (myopia, aphakic, DR contralateral eye trauma, family history of CD) once a year, in search of retinal tear that must be quickly process laser .