Eyes always see hair can be seen in normal people, may also be mosquito, high myopia caused by patients should consult a doctor in time, clear cause for treatment. 1. Normal people: if the patient bangs longer, can interfere with the patient’s normal vision, so the patient can appear in the field of vision always appear hair performance, the bangs will be fixed, can be seen clearly. 2. Flying mosquito disease: Flying mosquito disease patients because of vitreous clouding can appear in front of the eyes with floating small black shadow performance, the black shadow can be linear or flaky, thin small black shadow similar to hair, some patients can also be accompanied by an abnormal sense of flashing light and blurred vision performance. 3. High myopia: High myopia refers to people with myopia of more than 600 degrees, such people are more likely to have visual fatigue, eyeball protruding performance, patients can always see the performance of hair in the eyes, and generally can be relieved after resting the eyes. It is recommended that patients with dark shadows in front of their eyes and other discomforts should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.