The eyes are the windows to the soul, so say artists and so say medical doctors. The only blood vessel in the human body that can be seen with the naked eye is the fundus vasculature, and some systemic diseases such as arteriosclerosis can be detected through fundus examination; the only nerve that can be seen is the optic nerve in the cranial nerve. When a person loses his eyesight, it will bring pressure to the family and society at the same time, and eye care is of great significance to the whole society. In fact, people’s awareness of eye care is also increasing, eye discomfort, many people will buy their own, the use of eye drops, do not know that this little eye drops, if not used properly, not only can not play a therapeutic role, and even cause serious damage to the eyes. For example, is a viral infection, the choice of antibiotic eye drops is ineffective, only the choice of antiviral eye drops will have an effect. Therefore, if you are not sure what kind of eye disease you have, it is best to consult an ophthalmologist first and make a diagnosis before choosing a medicine. In general, if the eye redness and pain, yellowish-white discharge, consider a bacterial infection, you can choose antibiotic eye drops, such as chloramphenicol, rifampicin, haloperidol eye drops, etc.; if the secretion is aqueous, consider that it may be a viral infection, then you should choose to use antiviral eye drops, such as acyclovir, vinclovir ophthalmic solution, or interferon ophthalmic solution; if the eye is very red, but no pain or pain is not obvious, it is likely to be fungal infections. Mostly fungal infections, to use antifungal eye drops, such as natriuretic eye drops, static eye drops, etc.; if too much computer fatigue caused by eye fatigue, you can use eye drops such as Runjie; if it is senile dry eye, the use of tears and other artificial tears, to make up for the lack of tears, so that the symptoms are relieved. However, it should be noted that the vast majority of eye drops, in addition to its therapeutic ingredients, also contains preservative ingredients. If eye drops are used frequently, the preservative ingredients can damage the eye surface structure and cause irritation. Antibiotic eye drops are the most widely used, and their misuse can have adverse consequences. These eye drops should be used according to a regimen under the guidance of a doctor, and if used blindly for a long period of time, they can cause the development of drug-resistant strains of bacteria, which can also lead to chronic conjunctivitis and fungal keratitis. Fungal keratitis is more difficult to treat because there are no specific drugs that can inhibit the fungus, and fungal keratitis has become the leading cause of blindness in some cities. Eye drops have different therapeutic effects depending on their ingredients, and if you take a particular eye drop on a regular basis without a diagnosis, it can lead to undesirable consequences, some of which can be very serious. For example: some people’s eyes dry discomfort, when the use of glucocorticoid eye drops, immediately feel comfortable, so often use this kind of eye drops, but these drugs can inhibit the immune function, may cause serious infections and even perforation of the cornea, but also may cause hormonal glaucoma and other serious consequences; some eye drops contain vasoconstriction adrenaline, when the eyes congested with congestion with immediate congestion subsides, this is adrenaline contraction of the blood vessels, not remove congestion This is because the adrenaline constricts the blood vessels and does not remove the cause of the congestion, and when the effect of the medicine passes, the congestion remains. If these powerful vasoconstrictor drugs are used frequently, the metabolism of the eye will be affected, which may aggravate the eye disease. The preservation of eye medicines also affects their efficacy. Therefore, it is best to store eye medicines in a cool and dry environment, not necessarily in the refrigerator. As for the period of preservation, if it is not opened for use, the period of use will be indicated on the package, generally 2 to 3 years, if it has been opened for use, it is best to use it up within one month, and some ophthalmic medicines that do not contain artificial preservatives and special prescription ingredients may have to be used up in a shorter period of time.