Many patients, especially the elderly will have this experience: a sudden flashing sensation in front of the eyes, or the emergence of “flying mosquitoes” or black shadow in front of the eyes. What is going on here. If there is a sudden flash in front of the eyes, it means that there is a vitreoretinal traction, which often occurs in most middle-aged and elderly people, if the vitreous detaches smoothly from the retina, there is generally no big problem, but later in life will be conscious of the presence of black shadows in front of the eyes, you can not go to treatment. However, it is recommended to go to the ophthalmology department for a detailed fundus examination to rule out retinal fissures, retinal detachment and other abnormalities in the eye. 2. If there is a “flying mosquito” in front of the eyes, for most middle-aged and elderly people is a normal phenomenon, for the vitreous clouding, is a degenerative disease, no treatment, the phenomenon can also appear in young people, especially highly myopic or had a trauma people. 3. If there is a fixed black shadow in front of the eyes, or even the aura of flashing light, you should highly suspect the presence of retinal
If retinal detachment occurs, surgery is needed to reset the retina as soon as possible. 4. If the black shadow in front of the eyes is smoky or jet-like, vitreous hemorrhage should be highly suspected. Most of these patients are accompanied by systemic diseases such as diabetes, hypertension, etc. Occasionally, posterior vitreous detachment may also be caused, which requires urgent medical attention and surgery in serious cases. The above listed several cases, may not be very comprehensive, but most patients for these cases, such as the occurrence, regardless of the impact, it is recommended to consult a detailed examination, so as not to affect the condition.