What is the cause of the red eye in a child?

We always find that some people have problems with both eyes, but some only have one eye that becomes red and swollen. When parents find that one of their children's eyes is red and swollen, they should first determine whether there is bacterial infection or inflammation, or whether the child has a habit of rubbing his eyes with his hands recently. These are all causes of red and swollen eyes. Parents need to take their children to the hospital for examination first, and if necessary, clean out the dirt in the eyes to prevent long-term infection in the eyes.

As the name suggests, the main symptom of conjunctivitis is red eyes, but it may also be accompanied by a series of related symptoms, including eye pain, gritty feeling in the eyes, blurred vision, headaches, etc.

Redness and swelling in various parts of the body are generally manifestations of inflammation. Pink eye is no exception. It is caused by inflammation of the eye. In order to more easily understand the pathology of conjunctivitis, let's first briefly introduce the basic structure of the eye.

The reason why people of different races have different eye colors is because of the different colors of their irises. The iris is located in the aqueous humor between the cornea and the lens, and the small hole in the center is the pupil. The size of the pupil changes with the intensity of light. In a dimly lit environment, in order to see objects clearly, the pupil will dilate to allow more light to enter; in sufficient light, the pupil will contract accordingly.

Light entering the eye is focused by the lens, passes through the vitreous body, and reaches the retina. The retina is where vision occurs; it is equivalent to the film of a camera. It converts light signals into nerve signals and transmits the signals to the visual center of the brain through the optic nerve.

Eyelids, also known as eyelids, can prevent dust and other foreign objects from entering and play a role in keeping the front of the eyeball clean. Tears not only clean and moisturize the eyeballs, but also have a bactericidal and disinfecting effect.

Inflammation can occur in any part of the eye. If the inflamed area is visible to the naked eye, this is conjunctivitis.

The most common pink eye condition is conjunctivitis, an inflammation of the conjunctiva, which can be caused by infection or allergies.

The eyes may also turn red after direct contact with an irritant. The most common problem is that some children experience red eyes and sore eyes after swimming. This is because the chlorine in the swimming pool water irritates the eyes. After taking a shower or shedding some tears, let the chlorine flow out of your eyes and the red eyes will disappear. Sometimes, red eyes can also be caused by eyelashes, dust, or even small flies getting into the eyes. Red eyes can also occur if the eyes are scratched.

Eye stickiness is very common in newborn babies and is sometimes accompanied by red eyes. The eyes secrete yellow, sticky pus all night long, and may even cause the eyelids to stick together the next day. At this time, you can wipe it carefully with cotton wool dipped in warm water. When wiping, wipe from the inner corner of the eye to the outer side. Newborns with sticky eyes generally do not need antibiotic eye drops unless the whites of the eyes are also red or inflamed.