Can foreign matter in the eye be expelled by itself?

Eyes are a very important part of our body. We must take good care of our eyes in daily life and develop good eye habits. When it is windy and sandy, we must pay more attention to not let dust enter our eyes. When there is some foreign object entering the eye, you will feel that you cannot open your eyes, your eyes will feel some pain, and you will have tears. It would be best if the foreign object entering the eye can flow out with tears.

1. Dust

When sand and dust fly into the eyes with the wind, the irritation caused often makes people rub their eyes involuntarily with their hands or handkerchiefs. This not only fails to solve the problem, but also causes foreign matter to embed into the tissue and become difficult to remove.

The correct way is:

Pinch the upper eyelid with two fingers and gently lift it forward. The rescuer will blow gently into the eye to stimulate tears and flush out the sand and dust. If this method does not work, turn over the eyelid to directly search for foreign objects. Let the patient look upwards first, and the rescuer will gently search with his hands. If not, you can look for it by turning up the upper eyelid, the edge of the eyelid and the white of the eyeball. After finding the foreign object, use a clean, wet handkerchief to open the lower eyelid to look for the foreign object. Pay special attention to the wrinkles where the lower eyelid and the eyeball meet. Foreign objects are easily retained here, so you should carefully use a corner to gently wipe out the foreign object. If a lot of sand and dust enters your eyes, rinse them with clean water.

2. Foreign matter such as dust, iron filings, etc. splashes into the eyes

When foreign objects such as iron filings, ash and sand splash into the eyes, the eye will feel a foreign body sensation, and will experience irritation symptoms such as pain and tearing. The foreign body can be seen by turning over the upper eyelid.

First aid measures

Do not rub it to prevent the foreign object from rolling and damaging the eyeball. You can pull your eyelids forward to let tears wash away the foreign body or rinse with cold water to wash away the foreign body. If it doesn't work, close your eyes, turn your eyes downward, and do the following:

1. Rinse the conjunctival sac with normal saline or 3% boric acid water.

2. Use a sterilized cotton swab dipped in a little saline to gently wipe it off, and then apply antibiotic eye drops.

3. Send to hospital for diagnosis and treatment if necessary.

Notice:

1. Wash your hands with soap and water before handling the patient.

2. Do not let the patient rub his eyes.

3. Do not use cotton or other items to remove foreign objects. Do not remove foreign objects from the iris or pupil opening.

4. Once the foreign body is removed, the person wearing contact lenses should remove their contact lenses.

3. Sulfuric acid, alkali and other highly corrosive chemicals splashed into the eyes

Timely and regular flushing of the eyes during on-site first aid is the primary guarantee to avoid blindness. Immediately find clean water nearby to rinse the injured eyes. When flushing, turn the injured eye downwards and use your index finger and thumb to pull open the eyelid to flush out as much corrosive chemicals as possible. If there is a basin of water nearby, have the child immediately immerse his eyes in the water and blink continuously. If the child is too young, you can use your hands to help the child open and close his eyelids.

4. Quicklime splashes into the eyes

First, do not rub it with your hands, and second, do not rinse it directly with water. Because quicklime will produce alkaline slaked lime when it comes into contact with water, and at the same time generate a lot of heat, it will burn your eyes.

If there is sand in your eyes, can you use your fingernails to get it out?

According to experts, corneal foreign bodies refer to foreign objects such as dust, sand, and metal debris that splash onto the surface of the cornea or become embedded in the corneal tissue. After a corneal foreign body occurs, some people rub their eyes, some ask others to blow air onto the surface of the eye with their mouths in an attempt to blow the foreign body away, and some try to wipe it off with their fingernails or handkerchiefs. The above methods of dealing with corneal foreign bodies are all wrong and extremely dangerous.

Experts say that normal corneal epithelium is an important barrier to maintain the cornea from infection. Once a corneal foreign body occurs, the corneal epithelium will be damaged, and bacteria in the conjunctival sac and the foreign body will take the opportunity to invade the damaged cornea.

If you rub your eyes, the foreign body may scratch the cornea or embed it deeper; blowing air onto the surface of the eye with your mouth is even more undesirable, as the droplets in the mouth contain a large number of bacteria, which can be brought into the wound of the corneal foreign body; fingernails and handkerchiefs also contain a large number of bacteria. The above incorrect handling methods may cause keratitis. If the inflammation spreads into the eye, it may also cause iridocyclitis, endophthalmitis, and panophthalmitis. In severe cases, it may lead to blindness or even enucleation of the eye.

According to experts:

The correct way to deal with corneal foreign bodies is to close your eyes and gently lift the upper eyelid forward, which will reflexively stimulate the lacrimal glands to increase tear secretion and use the tears to flush the foreign bodies off the corneal surface. Regardless of whether the corneal foreign body is removed, you should see an ophthalmologist for treatment. Your doctor will use a slit lamp and sterile conditions to remove corneal foreign bodies. After the corneal foreign body is removed, antibiotic eye drops or eye ointment should be used to prevent keratitis. A follow-up visit is required the next day after the corneal foreign body is removed to check whether the cornea has any infection.