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, the patient has a strong demand for treatment, feasible laser vitreous ablation or vitrectomy. Flying mosquitoes usually refers to a physiological vitreous turbidity, vitreous liquefaction and posterior 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., more obvious when looking at the bright background, part of the vitreous turbidity with the turbid If the symptoms disappear with the movement of the cloudy vitreous position, it can be left untreated or treated with amiodotide eye drops and blood and eye tablets to promote the absorption of metabolites. If the flying mosquitoes seriously affect the quality of life, patients have a strong demand for treatment, feasible laser vitreous ablation or vitrectomy. Laser vitreous ablation is a treatment method to eliminate the symptoms of mosquitoes 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 FMS can be cured by vitrectomy, its invasive treatment may cause complications such as medical retinal rupture and cataract formation. In summary, physiologic vitreous clouding is a common sign, highly myopic eyes and elderly people are prone to it, and can be treated with aminopeptide drops and blood and eye tablets. It should be noted that if there is a sudden increase in the number of small black shadows floating in front of the eyes, or a sensation of flashing in front of the eyes, or a fixed black shadow obscuring the eyes, you should promptly go to the hospital for detailed examination.