Patient: Description of condition (onset, main symptoms, hospital visited, etc.): When I wake up in the morning, I notice: something flying in front of my eyes, a small black dot that turns with the eye, disappears at night or in the dark, and comes out in the daytime and when the light is bright. I have had myopic eye surgery. Is this physiological or pathological? Can it be cured? Doctor: Such a situation is also called mosquito flying, mainly with myopia and age-related, should go to the hospital ophthalmology dilated pupil examination fundus, if the retina is not a problem, can not care. Because the current use of the treatment of mosquito flying (vitreous turbidity) of the drug, may not be for most people have no significant effect.