Flying mosquito syndrome performance for the floating point in front of the eyes, stripes or small pieces of black shadow, this black shadow can be with the rotation of the eye and activity, if it is a fixed black shadow to consider other fundus diseases. Flying mosquitoes can be divided into two categories, figuratively speaking, “bad mosquitoes” and “good mosquitoes”. So what is mosquito flying disease? As the name implies, the symptoms are the person’s eyes feel black spots such as mosquitoes flying, the cause is the eye within the vitreous liquefaction or vitreous in the shadow of the cloudy material cast to the light-sensitive tissue retina caused. 1, “good mosquito” is physiological Most of the flying mosquitoes is physiological. Vitreous is a jelly-like substance that fills the vitreous cavity of the eye, in infancy the vitreous is uniformly gel-like, generally 40 years old began to liquefy, that is, water from the jelly state is constantly precipitated out of the separation process. As we grow older, vitreous liquefaction will become more and more frequent, and in myopic patients vitreous liquefaction will be more obvious; when the vitreous liquefaction reaches a certain level, the jelly-like material will become more and more concentrated and gather into shape, thus turning into strips and dots of cloudy material floating in the vitreous cavity with the activities of the eye will continue to move, which looks like a small black dot flying in front of the eyes. By the age of 80 or more, almost 50% or more of the vitreous liquefies. So, in fact, everyone has a degree of vitreous turbidity, but not everyone can appear flying mosquitoes, this is because only when the cloudy vitreous body is located right on the visual axis when the human eye will see the “flying mosquitoes”, when the cloudy vitreous body moved to the visual axis outside, “flying mosquitoes ” will not be cured. The “good mosquito” need not be nervous, just do a good job of daily health care measures can be. Usually do not read books, newspapers, television, mahjong, etc., when resting can look away or do eye exercises. Eat more unrefined cereals and fish, which contain zinc, selenium and other minerals, which can relieve eye fatigue. At the same time to avoid carrying heavy objects, suffered trauma, etc., to prevent retinal tears. 2, “bad mosquitoes” consequences are very serious “bad mosquitoes” is pathological, posterior vitreous detachment is the main cause, posterior vitreous detachment can lead to retinopathy. Overall, more than 65% of seniors over the age of 65 have a posterior vitreous detachment. When 50% or more of the vitreous liquefies in the eye, the entire vitreous body shrinks inward like a deflated ball, and the part of the vitreous body that was originally attached to the retina detaches. Some patients do not have any symptoms at all, but many patients may suddenly see circular or curved black shadows moving in front of their eyes, as if mosquitoes are flying around in front of their eyes. Posterior vitreous detachment can generally be left untreated if it does not lead to retinal tearing, but about 5% of patients will have complications such as retinal tearing. Retinal fissures must be treated early and the fissures must be actively closed, otherwise it will easily lead to retinal detachment and cause serious impact on vision. Generally speaking, most patients with posterior vitreous detachment are elderly patients. Patients with high myopia are more prone to posterior vitreous detachment because of the elongated eye axis and more liquefied components in the vitreous. 3, their own how to initially distinguish between two kinds of flying mosquitoes in their own lives can initially determine the two kinds of harm very different flying mosquitoes: a look at the number. When the number of “flying mosquitoes” is very small, you can count, often for the physiological. When the number is large, it is difficult to count, often pathological. Second look at the change. The number of “flying mosquitoes” is stable for a long time, often physiological. Once found that the number of sudden increase in the same time with a sense of flash in front of the eyes, should consider the possibility of retinal fissure. A more certain way to determine this is, of course, to go to the hospital for examination. Although simple mosquitoes usually do not need to be treated, because of the risk of retinal detachment, so once you find “flying mosquitoes”, it is best to go to the hospital for a detailed fundus examination to observe whether the peripheral retina is healthy, whether there is degeneration, whether there is a potential for fissure production. If these lesions are found in advance, we can eliminate the risk of retinal detachment in the bud through fundus laser treatment. 4, flying mosquitoes and cataracts have a difference Some older people reflect that their eyes also appear in the black shadow, but it does not fly, but fixed at a certain point. Is this mosquito flying disease? In this regard, Shen Jian analysis, if the patient feels that there is a fixed hazy black shadow in front of the eyes, in the sunlight, light black shadow more obvious, this may be the performance of the lens early limited turbidity, which is one of the early symptoms of cataract, in addition to the fundus retina before the small piece of hemorrhage will also appear in front of the fixed black shadow, this symptom is the need for timely treatment. Flying mosquitoes and other eye diseases appear in the black shadow difference is: cataract and other diseases of the black shadow is fixed does not move, that is, whether the eye is turned, the position of the black shadow in the field of vision is fixed. Flying mosquito disease is not, in the case of the eye does not turn, the black shadow can also be up and down or left and right drift, once the eye turns, the black shadow will greatly increase the range of activity. Cataract is a common disease in the elderly, is also an important cause of blindness, the elderly appear in the eyes of the black shadow, not simply by moving or not to judge, the best by professional ophthalmologist eye, fundus examination, in order to make a clear diagnosis.