If mild miosis does not affect the life, can not deal with, or oral medication and point eye drug treatment, if serious impact on the quality of life, have a strong demand for treatment, feasible laser vitreous ablation or vitrectomy. Flying mosquitoes is a physiological vitreous turbidity, vitreous liquefaction and post-detachment is the main cause of flying mosquitoes, this type of vitreous turbidity usually has little impact on vision and life, the patient will appear in front of the eyes, and will fly around with the rotation of the eye, as if flying mosquitoes, its shape has a round, oval, dot, line, etc., look at the bright background more obvious, part of the vitreous turbidity with the cloudy vitreous Symptoms disappear with the position of the cloudy vitreous, can not be dealt with, or can be local point eye or systemic oral iodine-containing drugs. If the flying mosquitoes seriously affect the quality of life, the patient has a strong demand for treatment, feasible laser vitreous ablation or vitrectomy. Laser vitreous ablation is a treatment method to eliminate the mosquito symptoms in front of the patient’s eyes by blasting and crushing the cloudy foci of the vitreous through laser vaporization, which is safe but inefficient and requires repeated treatment. Although Femtomycosis can be cured by vitrectomy, its invasive treatment may cause complications such as medical retinal rupture and cataract formation. There are strict indications for these surgical methods. Physiological vitreous clouding should be distinguished from pathological vitreous clouding, the latter may include the symptoms of the former, but the severity of vitreous clouding, accompanied by large patches of cloudy black shadows in front of the eyes or a large number of cloudy black shadows in front of the eyes, most of them are the symptoms of fundus disease such as fundus hemorrhage, and need to be seen in hospital early. In summary, physiologic vitreous clouding is a common sign, which is likely to occur in highly myopic eyes and elderly people, and can be treated with aminopeptide eye drops with blood and eye tablets. It should be noted that if the number of small black shadows floating in front of the eyes suddenly increases in large numbers, or if there is a sensation of flashing in front of the eyes, or if there is a fixed black shadow obscuring the eyes, you should promptly go to the hospital for detailed examination.