Many of us have had the experience of getting lost in the eye. In mild cases, the foreign body can be discharged on its own without obvious symptoms, while in severe cases, the eye will become red, painful, tearing, blurred vision and cause keratitis. Foreign body attached to the cornea (commonly known as the black eye) can scratch the cornea, or foreign body into the deep layer of the cornea, which can cause intraocular infection if not treated in time. If the foreign body is attached to the conjunctiva (commonly known as the white of the eye) and is not treated properly, it can also cause conjunctivitis. The common causes of misty eyes are: dust in the air, insects fall into the eye; accidental explosion in industry and mining or wartime explosion debris splashed into the eye; grinding wheels throwing metal pieces flying into the eye and so on. Friends engaged in electrical welding, grinding wheels and outdoor work should pay particular attention to good protection measures to protect their eyes. In case of eye confusion, do not panic, using the correct method can easily remove the foreign body. If the foreign body is still in the eye, ask someone else to open the upper and lower eyelids and use a sterile cotton swab to wipe it out. If the foreign body is attached to the cornea, it is generally not easy to take out because the cornea is very sensitive to sensation, and as soon as it touches the cornea, it causes the eye to rotate or close its reflex, and the foreign body cannot be taken out, but it is easy to bruise the cornea, so you should go to a hospital specialist for treatment in a timely manner. A corneal foreign body that is not treated in a timely manner can easily cause keratitis or even iridocyclitis, which can cause damage to your vision. Therefore, remind your friends never to underestimate so little things, our eyes are not allowed to rub. In addition, remind friends wearing contact lenses, when lost eye must be removed from the contact lenses, a thorough cleaning, while cleaning the eyes, such as foreign bodies can not be removed, to the hospital in a timely manner.