Macular cleft does not cause FMS. Macular cleft and FMS are two different types of eye diseases. Macular cleft is mainly caused by genetic factors, nutritional deficiencies and immune disorders. Once macular cleft occurs, it will result in a drastic decrease in vision, and if not treated in time, it may even lead to blindness. Macular cleft does not cause flying mosquito symptoms. Mosquitoes are mainly caused by vitreous liquefaction, patients will have moving black shadows in front of their eyes, and there will be flashes of light in brighter places. Physiological mosquitoes are more stable and do not need special treatment if they do not affect vision. Pathological mosquitoes need fundus examination, eye ultrasound examination, etc., can be directed to the cause of drug treatment. Causes of macular tear more causes, macular tear does not cause mosquito, macular tear symptoms and mosquito symptoms of patients, should be timely to the professional eye hospital consultation and treatment.