The eyes have black shadows floating commonly known as mosquitoes, in the clinical known as vitreous turbidity, refers to the visual field floating shadows or black and gray spots, filaments, bands or spider web images; can be age-related vitreous degeneration, vitreous accumulation of blood, trauma, infection and other causes, specific treatment plans need to be combined with the clinical symptoms of the patient’s condition to develop. Common treatment methods are as follows: 1, observation and follow-up: for myopia, age and other reasons caused by the flying mosquitoes, most will not affect vision, for a normal physiological changes, generally do not require special treatment, in the clinical usually to observation and late follow-up; 2, drug therapy: the use of iodine preparations for vitreous turbidity, can improve the eye metabolism, accelerate the vitreous lesion after the exudate The commonly used drugs are aminopeptide iodine, lecithin complex iodine, etc.; 3, surgical treatment: the common ones are vitrectomy and laser ablation. The former is suitable for long duration of disease with vitreous hemorrhage or retinal damage that may affect vision; the latter is mostly used to promote vitreous absorption, such as smashing the cloudy floating vitreous by laser to promote its absorption, in order to improve the clarity of patients’ vision. In addition, systemic diseases such as diabetes mellitus and hypertension may also cause fundus lesions to appear in this condition, and active treatment of the primary cause is required to relieve the symptoms. Due to the complex etiology, it is best for patients to go to the hospital ophthalmology department to check the fundus condition after this condition occurs, so as not to cause eye damage due to delay.