Conjunctivitis is the most common disease in ophthalmology, just like a cold in internal medicine. But also like a cold, not just have it, just take some medicine, it is best to first distinguish whether it is bacterial or viral, and use the right medicine to be more effective. Bacterial, you take antiviral drugs, of course, is futile. If you’re a viral, you’ll have to take antibiotics, but they’ll do the same thing. The difference between bacterial and viral colds is very simple, twenty dollars, tie a fingertip, see if the white blood cells are high. If you have a high level, you should consider an infection, inflammation, eat or play antibiotics, anti-inflammatory treatment. Not high then, consider viral, fever and then powerful, you use antibiotics is useless. These are the scope of internal medicine, I learned a decade ago that the knowledge of internal medicine, may have long been out of date, the concept of diagnosis and treatment today, may have changed to the realm I do not know, so let us not mislead the audience, back to the ophthalmology category. What about colds, they are just used as an example. But all kinds of diseases are related. Back to the topic of conjunctivitis. Conjunctivitis, too, is divided into bacterial and viral. With the mix of diseases today, sometimes you will see that the doctor prescribes both anti-bacterial and anti-viral eye drops. This is because sometimes, there are inflammatory conditions that do have both viral and bacterial elements present. But one of the two will usually dominate. For example, when there is an unusually large amount of eye stool, especially thick yellowish-white stool like pus, or even when you wake up in the morning and your upper and lower eyelids are gummed up with eye stool and you can’t open your eyes, this is usually a predominantly bacterial infection. You need to order antibiotic eye drops, such as Tobias, Levofloxacin and so on. If the redness of the eyes is secondary to a cold or fever, and there is not much droppings, it is usually a viral conjunctivitis, which requires antiviral eye drops or eye gel such as ganciclovir. It is particularly important to highlight here that each industry has its own rules. In the world of medication, there are rules of medication. That is, to use the medication regularly. The eye drops, as well as eating oral medication, with it, we must follow the doctor’s advice, the use of three times with three, the use of two with two, can not take it for granted, think of a drop, today point twice, tomorrow point four times, so not only can not cure inflammation, but also may be counterproductive. The actual fact is that you can find a lot of people who are not able to get a good deal on this. You use the drug today to faint it, and tomorrow did not insist on the drug, let it come to life, and the day after that, think about it, and give it a sprinkle, three days to fish and two days to sunbathe, the bacteria not only did not kill, but slowly adapt to the drug, becoming more powerful, that is, drug-resistant, that later to kill it, it is more difficult. The actual fact is that you will not be able to achieve an effective bloodstream concentration, but only side effects and no therapeutic effect. If the symptoms of bacterial conjunctivitis are severe, eye drops can be ordered once an hour at most. If the symptoms are severe, the eye drops can be ordered once an hour at most, and when they get better, they can be consolidated for a few more days before stopping. In addition to bacterial and viral conjunctivitis, there are more and more allergic cases today. Today’s children, allergies, nine out of ten. I haven’t heard of any children with allergic rhinitis or asthma before, probably because they used to live in the countryside and the natural environment was still more refreshing. It is said to be related to the current environmental pollution, vegetable pesticide residues and so on. Just like the increasing number of cancers and the increasing age, it is the rhythm of human self-destruction. This allergic conjunctivitis, the most important manifestation, is itchy. Sometimes the itchiness is so unbearable that you want to reach out and scratch your eyeballs. Itchiness is also the most prominent symptom of all allergic diseases. Many children who “squeeze their eyes” and look like they have ADHD are actually suffering from allergic conjunctivitis. Since children cannot accurately describe their discomfort and parents do not allow them to rub their eyes, children find their own ways to make their eyes more comfortable by blinking frequently, rolling their eyes, or “squeezing their eyebrows”. In this case, parents take a look at the child, the eyes are not red, eye droppings are not too much, not like inflammation, so they think that the child learned from others bad habits, or hyperactivity, a reprimand or even “fried meat with bamboo sticks”, in fact, completely wronged the child. Only if you exclude the eye disease itself and there is no cause, but the child is still “squeezing his eyes”, then you should consider ADHD and need systemic treatment. If the child happens to be sneezing, the diagnosis of allergic conjunctivitis is almost confirmed without examination. Parents often ask, “Is allergic conjunctivitis caused by allergic rhinitis? I explain this every time: It is not rhinitis that causes conjunctivitis, and it is not conjunctivitis that causes rhinitis, it is an allergic disease that manifests itself in two organs. If the allergy is in the eye, it is called allergic conjunctivitis; if the allergy is in the nose, it is called allergic rhinitis; if the allergy is in the airway, it is asthma. In terms of treatment, as long as the cause is diagnosed, the treatment is simple. The anti-allergy eye drops will usually be effective. For example, Emetine, etc. Why do you say that it will have “some effect”, but not that it is easy to cure? Because allergic diseases, by their very nature, are incurable. Just like how to treat an allergy to crabs? If you take anti-allergy tablets such as paracetamol, the red bumps on your body will go down and the allergy will be cured. However, it is impossible to eat paracetamol and not be allergic to crabs from then on. If you eat crab again in the future, you will still have bumps and allergies. How can I be allergy-free? Only by not eating crabs. The same applies to eye drops for allergic conjunctivitis, which only relieve the symptoms, but not cure them completely. This is because the allergens that cause allergic conjunctivitis are not easy to find, for one thing, and even if they are found, it is not easy to get rid of the exposure completely. There are too many possible allergens, the most common of which include seasonal pollen, mites, pet fur, and so on. Sometimes allergies are not cured even after changing the living environment. Many people grow up with allergies, go to college in another city, and never have allergies again. Some elderly people have allergies all their lives and when they get old, they go to another city to babysit for their children and their allergies don’t appear anymore. If the special anti-allergy eye drops such as Emetine do not work well, we can also make the killer, which is the hormone that cures all diseases. Immediate results, medicine to even if the disease can not be removed, but also immediately the symptoms disappear. But the almighty hormone is known to have many side effects and is not commonly used. Hormone drops can lead to glaucoma if you take too many eye drops. A short period of time, such as a week application, should not be a big problem, there is no need to talk about hormones.