If the symptoms of flying mosquitoes increase or become more obvious, there are generally two reasons: the first is a normal phenomenon, due to increased vitreous liquefaction or liquefied vitreous floating to the middle of the eye, causing the symptoms of flying mosquitoes become more obvious, do not need to be too concerned; the second is the organic lesions of the fundus, if there are retinal lesions, including retinal fissures, retinal detachment, will If there are retinal lesions, including retinal fissures and retinal detachment, which can lead to increased symptoms of mosquito flying, such as black shadows in front of the eyes or vision loss, if this situation occurs, we should go to the hospital as soon as possible to improve the fundus examination, to clarify whether there are organic lesions of the fundus, if there is a need for early treatment, retinal fissures need to perform retinal laser photocoagulation to close the fissures, retinal detachment requires surgery.