The eyes feel like there are insects flying, considering the mosquito, divided into physiological mosquito, pathologic mosquito. Physiological Aedes aegypti is mainly due to ageing, vitreous liquefaction, degeneration and so on. Pathological Aedes aegypti is caused by retinal tears, retinal phlebitis, retinal vein obstruction and other causes of vitreous blood accumulation. When there is inflammation in the vitreous body, the vitreous body is cloudy due to inflammatory exudate and inflammatory cells in the vitreous body, resulting in pathologic floaters, which is manifested by the feeling of bugs in the eyes. Parasites, eye tumors, etc. can also lead to vitreous clouding, thus inducing pathological Aedes aegypti. Usually, physiological Aedes aegypti does not affect vision, but patients with pathologic Aedes aegypti need to actively cooperate with the doctor to prevent serious damage to vision, or even the possibility of blindness. Pay attention to the protection of eyes in daily life and avoid excessive use of eyes. If you feel bugs flying in your eyes, it is recommended to consult a doctor in time.