People often “talk about the discoloration of the net”, because the net removal is not handled well, it will cause irreversible consequences, and even lead to blindness in serious cases.
In fact, little is known about retinal detachment. What is retinal detachment? What are the reasons for disconnection? What are the dangers of being off the Internet?
What is retinal detachment?
Retinal detachment is a pathological condition in which the retinal neuroepithelial layer and the pigment epithelium are separated from each other.
In embryogenesis and histology, there is a potential gap between the retinal neuroepithelium and the pigment epithelium. Under normal conditions, through a series of physiological and biochemical mechanisms, the retinal neuroepithelial Adhesion with the pigment epithelium to ensure the normal physiological function of the retina.
After retinal detachment, due to the damage to the nutrition of photoreceptor cells, if not reset in time, retinal atrophy and degeneration will occur, and visual function will be seriously damaged. The detached part of the retina cannot perceive light stimuli, resulting in an incomplete or missing image formed on the retina. Retinal detachment is also known as retinal detachment, retinal detachment, retinal detachment.
What causes retinal detachment?
There are three main types of retinal detachment, and different types of retinal detachment have different causes.
Herogenous retinal detachment is more common in middle-aged or elderly people, with myopia in the majority, and both eyes may develop successively. The causes of the disease include lattice and cystoid degeneration of the peripheral retina, vitreous liquefaction degeneration and retinal adhesion, which are related to factors such as age, heredity, trauma, and high myopia.
Exudative retinal detachment is more common in intraocular retinal choroidal tumors such as retinal hemangioma, retinoblastoma, choroidal melanoma and metastatic cancer; inflammation such as uveitis, VKH , choroiditis, scleritis; pigment epithelial lesions such as bullous retinopathy, uveal leak syndrome; retinal vascular diseases such as von-Hippel and coats disease; systemic diseases such as pregnancy-induced hypertension, hypertensive retinopathy and some blood disease, etc.
Stretch retinal detachment is more common in proliferative diabetic retinopathy, ocular trauma, long-term vitreous hemorrhage, periretinal phlebitis, after multiple intraocular surgeries, long-term retinal detachment , after condensation, etc.
What are the symptoms of retinal detachment?
When retinal detachment occurs, patients often feel a little or flaky black shadow in front of their eyes fluttering with eye movement, Ripple feeling, visual distortion, and even a sense of shadow occlusion in the field of view.
In the event of macular detachment, central vision decreases dramatically. Detachment is usually preceded by aura symptoms: flashes of light on eye movement, and often dark shadows fluttering in the visual field due to vitreous opacity. If the retina is completely detached, vision is reduced to light perception or completely lost.
Before vision loss, there is often visual distortion, and there is a feeling of tremor during eye movement. Because the intraocular fluid enters the choroid through the pigment epithelium, the intraocular pressure is biased. Low. The range of detachment is wide, and the longer the time, the lower the intraocular pressure. Occasionally there are cases of high intraocular pressure. Small white dull spots are seen behind the retina that has been detached for a long time. When the retina is reattached, the subretinal fluid is absorbed and the intraocular pressure can be restored.
How is retinal detachment treated?
Retinal detachment is a serious disease. Once found, it should be treated as soon as possible, if not treated in time, it may cause blindness. After retinal detachment, surgery is generally required to close the tear and restore the retina. For retinal tears that have not yet detached, laser treatment can be used. The current surgical treatment for retinal detachment is vitrectomy, in which gas or silicone oil is injected into the space formed after the vitreous is removed to reattach the retina.
Retinal detachment cannot heal by itself. To sum it up in one sentence: the earlier the treatment, the better. Unlike cataracts, retinal detachment progresses rapidly. As the retinal detachment becomes larger and larger, the visual impairment caused will also increase. Delayed treatment can lead to complete blindness. The earlier the treatment, the better the effect. Therefore, once you notice the symptoms of retinal detachment or eye abnormalities, it is recommended to seek medical attention within 24 hours.