If the eyes appear yellow circle, do not worry too much. It is best to go to the hospital to do an eye ultrasound examination, at the same time let the doctor dilate the pupil to check the fundus of the eye, it is likely that the vitreous clouding caused by the usual said flying mosquitoes. Generally as we age, many people will have this situation, which is often a physiological phenomenon, is the vitreous liquefaction after detachment caused. But many people appear yellow circle, may also be due to the vitreous accumulation of blood caused, in this case, is a pathological vitreous turbidity, it is best to go to the hospital to do eye ultrasound examination to clarify the diagnosis. Also if it is more serious it is best to use lecithin complex iodine tablets, the only effective drug for the treatment of the disease. However, the drug does not mean that it can significantly disappear the yellow circle, but can significantly relieve the symptoms. The usual time must develop good eye habits and eye hygiene, but also can significantly alleviate the symptoms of mosquito flying disease.